The Ninja BL660 is representative of how the top standard the standard Ninja blender can be.
It has a robust 1100-watt motor that can handle the strongest ingredients and a big 72-ounce pitcher designed to handle your largest batches.
Anyway, it also has the flexibility and finesses to make personal portions with its added to-go cups.
Ninja BL660 vs. BL621 Professional Blender
It seems as if the Ninja BL621 is a type of an earlier version of the BL660.
As such, it has amazingly similar specs.
The greatest difference is its Nutrient Extraction mode, which is designed to pull the nutrients and vitamins out of veggies or fruits.
Another thing value noting is that you can pretty much find it used or renowned these days.
While you can generally trust in the standard of a renewed blender like BL621, we personally say you should go for the BL660.
You get specs that are quite much identical to the BL621 with the included advantage that it is brand-new.
Manual blend setting
While the labels on their buttons are different, the BL621 and BL660 have essentially the same manual features: medium, low, pulse, and high.
On the BL621, they are actually labeled that way. The BL660, on the other hand, has them labeled as 1, 2, 3, and pulse, respectively.
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Blending pitcher capacity
Both these Ninja blenders contain an extra-big blending pitcher with a seventy-two-ounce capacity. This is perfect for when you need to serve a group of people.
With the size of these blending jars, no one will ever be left out. You will be capable of making enough frozen smoothies, drinks, or dip for every person.
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Motor power
If the baseline for you when it comes to blenders is sheer blending power, you will be hard-pressed to pick between the BL660 and BL621.
They have both 1100-watt motors.
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