I too am trying to rid myself or Reason for a drum machine/sampler, I dont use the Rex player much at all. You could drag the Rex files direct into SX and quantize that way, not as good as using midi notes, but its worth knowing.

Does'nt stylus act as a rex player? I wouldnt know I dont have it.

I was going to install Battery as the drum machine.

I would have to say fruity loops VSTI, yet for some ****ed up reaon it makes odd digital nioses when ran as a VSTI on mine, I normal have to shorten the volume envelopes.

I want a realy good Drum machine for Reactor, same parameters as on Reaon, that would be realy good esp for soundquality.

Theres one that comes free with Reactor 4 but its a lil bit awkward. I miss how you can flip the sample with the up and down buttons in reason. Its realy handy.