My first stroll out of the newbie forum (even though I am obviously still am one). I did some searching but couldn't locate the answer to my question.

I'm thinking about buying some variation of x-keys hardware.

1) My primary computer is a laptop with no PS/2 port. The recommendations seem to lean strongly towards PS/2 over USB. But if I am going to have to get a converter to plug it into my USB port, does it matter? Would I loose all the efficiency benefits of the PS/2 if I am sending it through my USB port anyway?

2) Is it possible to use multiple x-key pads? For example, an X-keys Pro plus a desktop? I read in someone's post they have PS/2 ports built into the pads for daisy-chaining, so presumably you could link 2 together and use both sets of keys as long as you didn't overlap the functions mapped to the keys?
2a) If they were USB versions, could you plug two into 2 different USB ports?

Thanks for the help.