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Ninja BL660 Professional Compact Smoothie & Food vs Oster Classic Series Heritage Blender with 6-Cup

Updated August 2026 — Ninja BL660 Professional Compact Smoothie & Food wins on capacity and versatility, Oster Classic Series Heritage Blender with 6-Cup wins on durability.

The Ninja BL660 offers superior power and features compared to the Oster Classic Series, making it the better choice for serious blending needs.

Why Ninja BL660 Professional Compact Smoothie & Food is better

Power

Ninja has a 1100-watt motor versus Oster's 1000-watt.

Capacity

Ninja's 72 oz. pitcher is larger than Oster's 6-cup jar.

Blending Technology

Ninja uses Total Crushing Blades for better ice crushing.

Why Oster Classic Series Heritage Blender with 6-Cup is better

Price

Oster is cheaper at $132.27 compared to Ninja's $139.99.

Durability

Oster's glass jar is shatter-proof and dishwasher safe.

Simplicity

Oster has a straightforward 2-speed toggle control.

Overall score

Ninja BL660 Professional Compact Smoothie & Food
88
Oster Classic Series Heritage Blender with 6-Cup
75

Specifications

SpecNinja BL660 Professional Compact Smoothie & FoodOster Classic Series Heritage Blender with 6-Cup
Motor Power1100W1000W
Jar MaterialPlasticGlass
Speed Settings32
Dishwasher SafeYesYes
Warranty1 Year10 Years

Dimension comparison

Ninja BL660 Professional Compact Smoothie & FoodOster Classic Series Heritage Blender with 6-Cup

Price Comparison

When comparing the Ninja BL660 Professional Compact Smoothie & Food Processing Blender and the Oster Classic Series Heritage Blender, the Ninja is priced at $139.99 while the Oster is slightly cheaper at $132.27, making it about 5.5% less expensive. This price difference may appeal to budget-conscious consumers looking for a reliable blender without breaking the bank.

The Ninja BL660 offers powerful features that may justify its higher price, particularly for those who frequently make smoothies or frozen drinks. However, the Oster Classic, with its own set of valuable features, provides an attractive alternative for those who need a dependable blender for everyday use. Ultimately, both options deliver solid performance at a reasonable price point.

Motor Power and Performance

The Ninja BL660 boasts an impressive 1100-watt motor, while the Oster Classic Series is powered by a 1000-watt motor. The Ninja's higher wattage translates to more robust blending capabilities, allowing it to crush ice and blend tough ingredients more efficiently. This makes it an excellent choice for those who regularly prepare smoothies, frozen drinks, and sauces.

In contrast, the Oster’s 1000-watt motor still provides sufficient power for most blending tasks, such as making smoothies and soups. The difference in motor power may be subtle in everyday use, but for those who demand peak performance, the Ninja clearly has the edge. Both blenders perform admirably, but the Ninja is designed for more demanding blending needs.

Design and Usability

The Ninja BL660 features a sleek design with a large 72 oz. pitcher, which is ideal for preparing big batches of smoothies or frozen drinks. This capacity makes it perfect for entertaining or meal prepping for the entire family. Additionally, it includes two 16 oz. to-go cups, allowing users to blend directly into portable containers, enhancing convenience.

On the other hand, the Oster Classic Series comes with a 6-cup (approximately 48 oz.) Boroclass glass jar. While this is sufficient for smaller batches, it may not meet the needs of larger families or gatherings. However, the glass jar is dishwasher safe, making it easy to clean. The toggle switch for speed control is simple and user-friendly, ensuring a straightforward blending experience. Each design has its strengths, catering to different preferences for capacity and usability.

Blending Technology

The Ninja BL660 utilizes the Total Crushing Blade system, which is designed to crush ice and blend tough ingredients quickly and effectively. This technology ensures that users achieve ultra-smooth textures for their smoothies and frozen drinks. The blender's three manual speeds and pulse control provide versatility, allowing for customized blending based on specific recipes.

In contrast, the Oster Classic Series employs a Crush Pro 4 Blade design, which efficiently pulverizes and chops ingredients. While it offers two speed settings, it may not provide the same level of customization as the Ninja. Nevertheless, for everyday blending tasks like making dips or smoothies, the Oster's technology is more than adequate. Each blender employs effective blending technology, but the Ninja offers a more advanced system for those seeking superior results.

Cleaning and Maintenance

Both the Ninja BL660 and the Oster Classic Series prioritize easy cleanup, but they do so in different ways. The Ninja’s removable parts are BPA-free and dishwasher safe, allowing for hassle-free cleaning after each use. This can be particularly appealing for users who blend frequently and want to minimize their time spent on maintenance.

The Oster Classic Series features a dishwasher-safe Boroclass glass jar, which is shatter-proof and designed to withstand high temperatures. This makes it easy to clean while ensuring durability over time. However, the classic design lacks some of the modern conveniences that the Ninja offers. In terms of cleaning and maintenance, both blenders are user-friendly, but the Ninja may have a slight advantage due to its overall ease of use.

Customer Feedback and Popularity

The Ninja BL660 holds a strong sales rank of 356, indicating its popularity among consumers. This suggests that many users have found it to be a reliable choice for their blending needs. Its features, including the powerful motor and large pitcher, have resonated well with buyers looking for performance.

Conversely, the Oster Classic Series has a lower sales rank of 8167, which may reflect a more niche audience or a preference for other brands in the same price range. Despite this, it still garners positive reviews for its performance and durability. While both blenders have their dedicated user bases, the Ninja appears to be the more favored option in terms of sales and customer satisfaction.

Which should you buy?

Deciding between the Ninja BL660 and the Oster Classic Series largely depends on your specific blending needs and budget. If you prioritize power, capacity, and advanced blending technology, the Ninja BL660 is the superior choice, despite being about 5.5% more expensive. Its ability to handle tough ingredients and larger batches makes it ideal for smoothie lovers or anyone who frequently entertains.

On the other hand, if you are looking for a reliable, budget-friendly blender for everyday tasks and don’t require the highest power, the Oster Classic Series offers solid performance at a slightly lower price. Its design is user-friendly and durable, making it a great option for casual users.

Ultimately, both blenders have their strengths, and the best choice will depend on your personal preferences and blending habits.