Many options on what 1's to put on. Tritium, night dots, fiber optic and...........? Depends on what you want/need the sights for and/or price is no concern? Adjustable or non? As far as removing the sights without marring or possible damage a sight pusher is the best option, but many have been done using a punch.
tools needed
hammer (preferably poly tipped)
brass punch (could use steel and tape the end)
soft jawed vise (or cardboard, rubber, poly? for protection)
painters tape, masking tape or similar adhesive tape for taping the slide area in case of a miss hit
You can do this with slide attached or removed from frame.
As far as what I've used on handguns are fiber optic and standard white from factory (glock, sig, s&w, desert eagle, walther and springfield). Tritium is a 1 way show (you can only see, not the muzzle end side). Fiber optic can be seen from both sides (most of the time). Night sights are similar to fiber and need light to recharge, but only you can see.