I have a Gretsch electromatic jet that came with a B50 tailpiece. The vibrato plays fine, but I couldn't help but notice how all of Gretch's more expensive jets use the bigsby B3C, and that virtually none of their guitars outside their electromatic series use the B50.

I'm plan on improving my jet in the future and I really don't know the difference between the two vibratos. What's the difference between a B50 and a B3C besides their looks and price? Does the B3C play better, or stay in tune better? If anyone can provide a solid answer I'd greatly appreciate it.