Re: Peavey Predator bridge upgrade
The best Strat-style bridges I've played are Wilkinson, and those aren't expensive. By "best", I mean in terms of feel of using the trem bar. The feel is smooth and just says, "quality".
I never use the trem bar, so I've always blocked off my Strat bridges. In that respect, GFS actually has very decent bridges, with the benefit of offering both USA and import spacings.
If only the saddles are giving you trouble, I recommend just swapping those out instead of the whole bridge. Graphtech makes very nice Strat saddles, both modern and vintage vibe.