I've tried a few different attachments for a kitchenaid mixer and the vitamix is above all! For one, the chute and smaller chute are great sizes.  I don't have to cut potatoes in half to feed them into the chute.  There is very little waste on the top of the shredding/slicing disks.  Cleaning it is a breeze. I love that I can keep the vitamix base on the counter and just pull out the attachment.  I use it much more often than other food processors because it's so convenient. This is a great add on to the blender!