I bought one and ended up returning it. I loved it, don't get me wrong. But we are not at the place in our lives where spending even $400 (what we paid) was the wisest of decisions. I felt guilty every time I saw the thing! So, we returned it, and resumed using our cheapo one, and we are okay. We miss it, but we are making it. Can't wait until the day when we can spend the money again!
That being said, I think they are overpriced. It is a nice blender, but I think $250-300 would be a more appropriate price.
My favorite feature was the tamper! It couldn't touch the blades, so I could jam my frozen smoothie stuff down in there very easily. It also did a great job at making nut butters, grinding flax seeds, etc etc. It is NOT a food processor--found that out when I accidentally made onion relish instead of chopped onions.