The biggest thing you can do to combat the return to pitch problem is tin your ball ends with solder. This locks the windings in place, and makes them less likely to stretch/contract with use.
I think the bridges are more stable than anything that is not a Floyd, but remember that they will not respond like a fulcrum (Strat, Floyd, PRS, Wilkinson, Hipshot, etc) trem. I like the smooth feel, but to some people, it is a non-starter.
The Achilles heel is absolutely the saddles and string retainers. They are made out of soft steel, rather than the hardened stuff the baseplate and trem are made out of. I've seen them literally disintegrating on old Charvel/Jacksons. Matt really understated the importance of keeping them cleaned and oiled. Sweat is the death of them.
I think the bridges are more stable than anything that is not a Floyd, but remember that they will not respond like a fulcrum (Strat, Floyd, PRS, Wilkinson, Hipshot, etc) trem. I like the smooth feel, but to some people, it is a non-starter.
The Achilles heel is absolutely the saddles and string retainers. They are made out of soft steel, rather than the hardened stuff the baseplate and trem are made out of. I've seen them literally disintegrating on old Charvel/Jacksons. Matt really understated the importance of keeping them cleaned and oiled. Sweat is the death of them.