Happ/Industrio Lorenzo parts drop in perfectly and, as such, are the easiest to work with. You can stick JP-style sticks/buttons in there, but that's much more work.
I wasn't going to replace the buttons, but if its a easy mod, I will. Wanna get one side green the other red. The stock buttons are ok I guess, too others it will probably be crap. I don't have much knowledge on the different feel of parts, but for the price I got it for I'm happy
Unless you're picky the buttons are fine. I would suggest holding off on them until they become a problem. However, I would suggest sticking a few Happ Comps in there. The current sticks are clones of Happ Supers.
Lite wrote:I was interested in getting the X-Arcade Two Player. Why would you want to replace the buttons on them? Are they not that great?
general concensus is that the stock parts are fine for mame and such, but if you are into more precise stuff (shmups/fighters) you will find them lacking. there are much better options out there.