An illustration of two blender brands.

In CR’s blender lab, our test engineers conduct exhaustive tests on blenders—evaluating their abilities to crush ice, make smoothies, and purée soups—to help you choose which blender deserves to grace your countertop.

But performance in these tests is only one aspect of a blender’s Overall Score. We also factor in predicted brand reliability and owner satisfaction ratings based on data from our annual member survey. 

Every year we ask our members about the products they own, and use that data to make projections about how new models from a given brand will hold up over time. “The ones rated Excellent for predicted reliability are less likely to have any issues in the long run, while the ones rated Poor are more likely to give owners a problem-filled experience,” says Simon Slater, CR’s associate director of survey research.

More on Blenders

We also ask members how likely they are to recommend their blender, and that serves as the basis for our owner satisfaction rating. The latest survey provided data on more than 52,900 blenders purchased by CR members between 2009 and 2019. You can find information on predicted reliability and owner satisfaction in our ratings.

Below are the best and worst brands for full-sized blenders and personal blenders in terms of reliability and satisfaction. Our survey results cover 14 brands, including Blendtec, Hamilton Beach, Ninja, Oster, and Vitamix. 

Most Reliable Full-Sized Blenders

CR members have told us that they expect to use their full-sized blenders for 10 years. But judging by our brand reliability ratings, that might be optimistic.

Most brands receive only a moderate Good rating for predicted reliability. And only a handful receive a rating higher than Good for owner satisfaction. In fact, Vitamix is the only blender brand to receive top ratings for both predicted reliability and owner satisfaction. Coming in at a close second, Ninja receives an Excellent rating for predicted reliability and Very Good score for owner satisfaction. And Oster get a Very Good rating for reliability and Good score for satisfaction.

Here’s a closer look at two full-sized blenders from brands that earn an Excellent rating for predicted reliability and perform well in CR’s lab tests:

Quick Take

Vitamix 5200

Price: $400

Icy drinks (Smoothies)
Puree
Ice crush
Unlock Blender Ratings
Quick Take

Ninja Smart Screen DUO with FreshVac CT661V

Price: $170

Icy drinks (Smoothies)
Puree
Ice crush
Unlock Blender Ratings

Least Reliable Full-Sized Blenders

At the other end of the spectrum, Blendtec is the only brand to receive a subpar rating for reliability: It earns a Fair.

The rest of the brands, including Black+Decker, Breville, Braun, Cuisinart, Hamilton Beach, and KitchenAid, receive middle-of-the-road Good ratings for predicted reliability. 

Most Reliable Personal Blenders

Vitamix is the only personal blender brand in our survey to get top marks for both reliability and satisfaction, but Braun and Ninja come close. Braun earns an Excellent score for reliability and a Good rating for owner satisfaction; Ninja gets a Very Good rating for both. Oster also earns a Very Good reliability rating but an average Good for owner satisfaction.

Here are the details on two recommended personal blenders from CR’s tests:

Quick Take

Vitamix S30 Personal

Price: $400

Icy drinks (Smoothies)
Puree
Ice crush
Unlock Blender Ratings
Quick Take

Ninja Personal Blender with Auto-iQ BL480

Price: $100

Icy drinks (Smoothies)
Puree
Ice crush
Unlock Blender Ratings

Least Reliable Personal Blenders

Despite its name being almost synonymous with personal blenders, NutriBullet earns a Fair rating for reliability (the second lowest possible rating) and receives a middling Good rating for owner satisfaction. Bella rates even worse with Fair ratings for both.

Hamilton Beach and Cuisinart do slightly better, netting Good ratings across the board. Black+Decker also rates Good for reliability, but it’s the only brand to get our lowest rating for owner satisfaction, meaning our members are not very likely to recommend Black+Decker personal blenders to others.