i agree that winamp is really good. i also have winamp on my desktop (its one of the best for the desktop) and the wifi sync is great. as far as being on wifi all the time goes, idk why you would be on wifi all the time with winamp? just turn on wifi, sync, turn it of...when you need a sync that is. winamp is great on android.
the only thing tho is the search feature sucks. the exact name of the song u search for is never the first one. its usually around the seventh from the top. hopefully it gets fixed later but its still a solid player that has a good feel to it. the widget is better than the stock widget too.