I bought the WMF cult pro, because I wanted to drink green smoothies and has (something Magic) brought my old device no good results. With the WMF, the smoothies are nice and creamy and he gets everything super small (hard pears, frozen). For other Mixer land I have not yet tried it.
A deduction of points he gets for his volume: which is really extreme (my neighbors thought I would come to the rock drill through the ceiling). Since he has a Smoothieprogramm that automatically turns off, you can simply leave the kitchen during the mixing.