Wow, I'm surprised I haven't seen more replies to this age old question haha. I'm lucky to have owned both (not at the same time, which would be awesome for side-by-side comparisons), and I'd say they're both awesome and you can't really go wrong with either. The pro of the Vitamix is the tamper that you can use during blending, and I think that could have come in handy with my Blendtec when making thicker things like hummus. But honestly, they're both amazing and I'd just go with whichever you can find on sale! If you want more info, there's tons of discussions on this if you just google search it, but you'll find that generally people are happy with both. Good luck!