The Limbdriver is one of the -- if not THE -- best fallaway on the market, and it'll work on EVERYTHING. I've set them up on all the BowTech CP (Center Pivot) bows, Diamonds and the new Destroyers.
I'm a huge fan of Spot Hoggs, but there are lots of good sights on the market. Rob's a big fan of Vipers, and they're good too... I'd also take a look at the new Axcel sights as well.