Certainly some very affordable options out there. I do like something with a colored front to help me pick it up, though I imagine you could even apply paint yourself with a steady hand.
I have Mepro's on my G32 and Ameriglow on my 19. Mepro's seem brighter and slightly larger but Ameriglows have a sharper white outline. I like AG's better. They are top.
Mepro's are older and dirtier of course, I'm going to try and clean em up somehow.