Picked up the Vitamix 5300 at Cosco during the holidays. Really like it and we use it every morning to make a smoothie. Cleans up super quick and easy. Absolutely no complaints. I plan to do some experimenting with soups and sauces but just haven't gotten around to either.
We used to juice a bunch of stuff and then create a smoothie by pouring into a blender and adding additional ingredients like plain greek yogurt, flax, hemp and chia seeds, local honey, etc. but that took us forever and the cleanup was a pain. With the Vitamix, we just through it all in and go. I have friends with the Blendtec and they love it also. Probably can't make a bad decision either way.