All three are very good. I'd lean toward Marvel, that's what you'll see at Camp Perry (bullseye crowd). Rear sight is a BoMar clone. Marvel uses a real barrel blank, not a 22lr liner. If using an STI style frame, Nelson Custom has excellent wide body mags. Use a 20lb main spring or ignition may be spotty. Your 10 ring is a 12" steel disk at 35yds.
If sub 2lb trigger, avoid the aluminum trigger shoe (or do a Jenny Craig). Can cause recoil sear bounce. STI used to offer a polymer trigger for single stacks, Brownells quit stocking'em.