I shoot my carry gun: Springfield PX9109L 5" parkerized in .45ACP with the standard fixed night sites. Simonich Gunner Grips, 3M 'stair tape' on the frontstrap and under the trigger guard, S&A magwell, 18# recoil spring from ISMI, shockbuff. Wilson 8-rnd mags, KyTac Sooper Hooper (although I usually carry in a BraveHeart...which I will shoot sometimes too, depends on how tough the competition is and how badly I want to win that day ), Comp-Tac single mag pouches.
Plain black rear, red fibre optic front. Various brands, but all the same color combination except I have tried one with white spots beside the rear notch.
I have a Heinie SlantPro plain rear and a .125" Dawson FO on the front. Love it. I tried them all before I settled on this set up. Tried all black, 3 dot, tritium 3 dot, black rear with white dot. Didn't like any of them.