I've had this for about 1 month and am happy with how well it breaks down frozen fruits and greens. I wish the container and blades weren't so wide, as they are hard for me to grip to open (I'm 5'4" and don't think of myself as having particularly small hands though). I use protein powders and wish that there wasn't as many spots for things to get stuck in corners, which makes it harder to fully mix as well as clean.
I like this because it does a good job blending ice in my smoothies. That is the main reason I purchased it. It is also easy to clean. I like that I can rinse the blades off immediately and then wash the cup later when I have finished drinking my smoothie.
I liked the former blades. The new ones seem duller, and the motor seems to labor more because of this. I understand that the former blades, a few, broke off when idiots put in too much ice, but I would never do that. I wish I still had the older designed blades.
I just bought my machine and have only used it a handful of times. It performed well the first time I used it, but ran hot, with an intense burning smell about 15 seconds in. I thought it might just be the newness, but the burning smell occurs each time. I am concerned and will need to return it unless this is normal for the first few uses.