My P220 came with factory night sights and I like them better than the Trijicons on some of my Glocks. I went with Meprolights on my G19 last month, and I do like the Mepros better and they happen to be cheaper. Either way, the addition of night sights on any SD pistol is definitely a benefit.
I agree night sights are a great nad needed investment on a defensive handgun.
I like the Sig sights and Trijicon as well but I LOVE the Tru Glo Fiber Optic night sights. Can't put them on my M&p or I would, dont think they're available for it but I have them on 2 G-17's a G-23 and My XD .45.
Check 'em out if you can. I'll try and post a pic.
Dang! I guess i don't know how but they are worth a look, very bright day or night!