Ok, so I've decided that to get a tremolo bar for my les paul, and I'm not next to positive i'm gonna get a stetsbar. I've heard alot of good things about them, and not alot of bad, so I was wondering if anyone knew anything about them.

1.) Do they untune your guitar quickly?
2.) Do they sound as good as I've head? (Divebombs and such)
3.) Easy to install (Tail stop)
4.) Etc etc