From a guy who's done set ups on all of the above, I have to ask, why wouldn't you use an edge or lo-pro?
All points of loving Ibanez aside, there is no better floating trem on the market than the edge or lo-pro edge. Once set up, they are the most accurate trem on the market. And dollar for dollar, the prices between all of them don't vary enough that I would consider one over the other except based on personal experiences.
And, in all honesty, if you are only using top of the line parts, I wouldn't even consider schaller. The Edge/Lo-Pro edge are as top of the line you will find.
Just my opinion.