I have 2 SG copies, a Tele copy, a Peavey Predator Strat, Gibson ES-175, and a Kay archtop w/ pickup. Only the Strat has a vibrato, a copy of the standard Fender old-school design. Unless you divebomb to hell, it stays in tune pretty well. But I'm with Biddlin, you hand is the best vibrato there is. There are times I'm vibratoing whole chords. I know a lot of folks make a Bigsby or Floyd a part of their style, and sound good doing it, but not me. I'm for using the hand vibrato as much as possible.