This product is so powerful ... with more horsepower than the Vitamix. The Blendtec motor is so strong it does not need sharp blades like what the Vitamix has. It is so easy to wash ... and with its short height, it easily stores in the countertop. Most important of all, it is very durable. Ours (an older model but with a similar motor) has about 4 years of service in the kitchen and more than 1350 cycles to its credit, blending frozen fruits all the time.
The only advantage Vitamix has over this product is that, while Blendtec has a relief hole on the lid of its container, Blendtec does not come with a plunger to push the fruits down when the blades liquefy the fruits at the bottom being blended while the rest of the fruits at the top hang on to each other in their frozen state. Big deal! I easily solved this problem by buying a big composite spoon from Costco for less than 6 dollars a pair and cut one of them to be used as a plunger.
I think all blenders that are designed to blend frozen stuff should come with a plunger. Frozen foods tend to cling to each other. And no matter how strong the motor of the blender, frozen stuffs that cling to each other tend to get suspended in place by the tapered dimension of the jar and don't get sucked/pulled down in the process of blending. What happens is that the strong and very fast action of the blade only creates a "cave" under the frozen stuffs that are stuck to each other. And the only way to produce a "cave in effect" on the frozen stuffs that are stuck to each other is to push them. On this note, Blendtec should provide a plunger for its blenders.
P.S. See the improvised plunger in the image I posted. It hangs about an inch from the blade of the blender for safety reasons. :)