The iBeam is a pretty good system and I have played some guitars that sound good with it. I would, however, suggest you compare withy the PUTW #27 and K&K Western for a bridgeplate-mounted system. Then, of course there are a whole host of under-saddle systems.
After a lot of deliberation and reading of comparative reviews I plumped for the PUTW #27 which works very well for me.