What is your intended use? Home defense, competition, EDC, range? Are your current night sights dim?
If i was to change mine out, I?d go either with a FO front and black unadorned rear. If for home defense, I?d look at Night Fision, as I prefer bold front sights.
Keep in mind- sights are like gloves- what works for me, may not work for you.
Good luck-