Yamaha DTXpress/DTXplorer/DTXtreme

Hello to all of you,

I wanna know if all of the available pads and cymbals available out
there are all compatible with the DTXpress 2.

I'm thinking of hardware like the RHH-130 HiHat and the Pads usually
used with DTXtreme, like the TP-120S. 

In general: Are all of the available Yamaha Pads on the market
compatible with a DTXpress 2?

And how about other Pads? I saw in the photos-section some kits with
Visulite cymbals. Are those compatible from the beginning or do you
have to modify them to make then compatible?

And what about the Roland E-Cymbals like the CY-5 HiHat Cymbal-Pad.
Has anyone already used Roland Pads with the DTXpress? Would this be
possible or would you have to build some kind of adapter for the
wiring or are the FSRs and piezos so different that you can't use them
with a DTXpress?

Thanks a lot, thanks in progress,
Best Regards,
Flynn