Wide toe bed.  Soft cushiony base.  Comfortable.  Ran a bit small, had to buy 1/2 size bigger than my normal size.

Overall I prefer Adidas Bounce because of the firmer support.  I have narrow feet so the wide toe bed of the ProStar is too wide for me.  The thing I hate about Bounce, however, is that small stones sometimes get caught in the open part of the sole.  Not a big problem, but kind of annoying.  For that reason, if I go anywhere that I know has lots of small stones or sandy soil, I use my ProStars instead.  On the subject of sizing, Bounce sizing was inconsistent (I bought 2 pairs - one fit great, the other in the same size was small.)