I have 2 favorite trems : A Kahler Pro 2315 (not in your choices) and an Ibanez ZR. However, an OFR, to me, is not as good as a liscenced Gotoh Floyd (and Gotoh builds the Ibanez Edge trems) so I'd go Edge. An Edge Lo-Pro is a bit old, but I like 'em a lot. The pro doesn't have the locking studs if I remember, but it is still a great trem. The original Edge too. But DON'T GO FOR THE EDGE PRO II or the EDGE III or whatever. They're not as good. And even less for the TRS and Lo-TRS.