Yeah, this has been asked loads of times. The best, quickest and easiest route to go is with an OFR. It requires no routing, and is mucho better than the TRS-II. Getting an
Edge trem would require routing and all that stuff. And it really isnt worth it to be honest. If you really do use the trem then go for the OFR, but if not I would actually block the trem.
I have had my TRS-II blocked on my PGM ever since I got it. I have never looked back since either. The tone improved, tuning improved and I just had a much better guitar all-round!