Good build and compared other high trie blenders -it just works better.
We had a Kitchenaid before and it just doesn't compare to the Vitamix. I was going to get the 750 with the preset bender options, but decided to go with the 7500 as I'm never going to walk away from a blend job to do other tasks.  

4 star rating is for the tamper..
If I could change anything it would be the tamper. It just doesn't feel high quality. It kind of feels like a cheap hollowed out plastic tube.. I rarely use and I just they're cheap to buy a replacement.