Quoted from CaptainNeo:it's not about LED's at all. LEDs are great. But the only LED that should be used in GI sockets to illuminate any playfield is either Warm white (for warm color pallet games, reds, yellows and oranges), or Cool white to accent cool color pallets (blues, greens, purples).
2SMB sunlights from Comet are fantastic. Great light distribution, natural look. I buy them by the 100's and use them in almost every game. EM's, early SS, dmd's.
Do you only use the frosted in GI or do you use clear? I found them on comet website but was curious, I always thought you use frosted in GI since some of them you can see.