I'm very happy with the quality of smoothies. However, this blender is extremely loud - more noisy than anything I've seen before. Also it leaves stains on a white surface because it has a black base.
I never though I would spend this much on a blender some the best money I have spent. It works great and is very easy to clean which is a big plus, have had it about 10 days and still learning how to use it. A little noisy but I can live with that , it works fast and does what is supposed to do.
I got mine just a month ago & have used it to make whole juices & smoothies. While it's a lil noisier than expected, I LOVE the power it has. Only one problem; my husband bought whole bean coffee today & forgot to have it ground, but he looked up blendtec & said, "hey, we can do it in the blender!" So we did. The ground coffee came out great, but unfortunately, even after just 5 seconds, it scarred the jar, so now it's cloudy at the bottom. I guess that's to be expected because it's plastic, but I wish there had been a warning. I'm sure it won't affect the performance, I just liked it to look clean, since it sits out on the counter. Still love the blender, though!