Just an idea.....
Have a listen to all if this first.
http://refx.com/downloads/nexus/exp_Dance_Vol_1.mp3
From a Pa1X users point of view, or any keyboard player who can't afford to use a laptop on stage, have you ever considered a UMPC ?.
Something like this puppy with it's screen that can also be seen in sunshine.

Now, load ReFX Nexus onto that (mp3 demo able) and you have instant access to some killer sounds. All of which can be recalled from the Pa1X touch screen. You would have no need to every touch the UMPC.
Add to that a program like OMB or BIAB and you have all the styles you could dream off.
For anyone looking for modern sounds, check out this demo of Nexus
http://refx.com/downloads/Nexus/Nexus.mp3
Regards.
Sharp.