Vitamix is okay, but for the price you can get a lot more performance. Something like a Breville Hemisphere, maybe. Same performance at 2/3 the price.
Stainless bar blender for a single-purpose unit. Sometimes limited in speed options, but made for power, durability and easy cleaning. Search reviews for current favorites. Keep in mind they are designed primarily for chopping ice and may not have the best blade design for everyday all-around service.
Brad