Try PIU Pro on Stepmania 4.0 CVS

You can check this post and try to download some 3rd-party-made-simfiles and noteskins. There are:

Clockwork Genesis - Diffficulties: CZ (11)
Dance All Night - Difficulties: FS (3), NM (10)
Destiny - Difficulties: CZ (11?)
Esperanza - Difficulties: NM (11)
Incognito - Difficulties: CZ (9)
Infection - Difficulties: CZ (10), NM (10)
Re-Rave - Difficulties: NM (11)
Robotix - Difficulties: CZ (9)
Utopia - Difficulties: NM (11)
Who - Difficulties: CZ (8 )
Xuxa - Difficulties: CZ (11)
Zodiac - Difficulties: CZ (9)
and Pro noteskin

and counting...