(checked 2026-10-10)Small sample: about 1,306 ratings (4% 1-star + 2% 2-star); the listing pools several color variants.
The current expert favorite personal blender (Wirecutter's top pick, Tom's Guide's budget pick) and the smoothest single-serve blender tested, but it is loud, comes with just one cup, and some owners report a leaky or hard-to-open lid.
Top complaints
- Loud
Wirecutter measured an average of 94 dB from 5 inches (about hair-dryer level), and Tom's Guide hit 92 dB crushing frozen fruit. Amazon's summary notes it can be loud.
- Only one tumbler
Both Wirecutter and Tom's Guide list the single cup as a drawback for shared households. Ninja doesn't offer other cup sizes, per Wirecutter.
- Leaky or hard-to-open lid
Low-star Walmart reviews (24 oz DB300 listing) report the lid leaking through the sip button and being hard to remove; Tom's Guide wants a lid lock.
What owners love
- Smoothest personal-blender results
Wirecutter says no other personal blender it tested broke down seeds and leafy greens like it, with no kale shreds or gritty seeds. Tom's Guide says it aced ice, smoothies and hummus.
- Fully dishwasher-safe
Cup, lid and blade assembly are top-rack dishwasher-safe (Wirecutter); Amazon owners find it easy to clean.
- True pulse and smart presets
Its pulse actually pulses, and the auto programs vary speed so you rarely need to shake or scrape. A big handle and suction feet help testers with limited grip.
Source: Wirecutter (personal blenders)
- Several people share it (only one tumbler)
- You need hot soups or big batches
- Noise in the morning is a problem
- One person's daily smoothie
- Ice and frozen fruit in a small footprint
- Dishwasher cleanup, blade included
Scores (tap for why)
What experts say
- Wirecutter (NYT): Best personal blender (updated 2026-03-23): the silkiest smoothies in the least time; flaws are the loud motor, a single 26 oz cup and a 1-year warranty.
- Tom's Guide: Best budget blender: aced every test; cons are one pitcher and no lid lock; 92 dB.