Honestly, I'd select what aims/points most naturally in your hands. Close your eyes, raise the empty handgun and open your eyes. Repeat several times, and see which sights are aligned closest with where you are looking. Either that or just go with what feels best.
Personally, I'd go with the Taurus 66. I owned one years ago. Very nice gun, super accurate ... should never have sold it.
But just because I liked it doesn't necessarily make it right for you.