I haven't really gone to the dark side yet, and still prefer the look of the old incandescent. I did try them a while back, but was not convinced. I have a few games that I received with LEDs fitted (MM, Elvis, MB and SM) and they look OK on SM, MB & Elvis, but no so on MM to me. As I have a lot of Capcom games and they don't like LEDs, those haven't been tried.

All that said, I suspect the quality has improved a lot and I might have a fool around wit them again one day.