No more than a half-step here, either.
To answer the question about the whammy bar: It's not worth the $ or loss of sustain, for how often I do it. Plus, it's a lot cooler than using a whammy bar, as far as getting house, I mean. For my Strat, it does have a whammy bar, but you get a lot more house out of bending the neck
I've broken a neck live before, but it was a Gibby, and at the headstock, which isn't hard to do. Gibsons have 13 degree headstock tilts, IIRC, and without a volute, using a 1-piece neck, well, it's easy enough. A Les Paul is not a Strat, that's for sure - there's a reason you never see vintage, beat-to-crap Les Pauls for sale for thousands of dollars - the beat-up ones all have broken necks and aren't worth crap! haha.
Anyway, I'd have a hell of a time finding a whammy-equipped bridge to replace my Variax one. It has 19mm spacing and piezo saddles that go to the Variax electronics. I wouldn't touch that with a 10-foot pole.
- Dave