I will bring it up again, for competitive use the standard tritium sights are WAY too wide. A tight shot at 20 or 25 yards will end up a 'poke and hope'.
I have Meps on a G22 that I have shot USPSA and IDPA with, while they are great night sights they flat out suck for competition. The front sight is .145" wide, do the math and see how much target they cover at 25 yards. After widening the rear notch out almost into the vials they are a lot better, and a TON faster but still not anywhere near ideal.
Night sights are just that, sights optimized for low light conditions.
If you want to focus primarily on low light defensive use the Meps are the brightest and very tough, they would be a great choice.
If you want to focus primarily on competition and have a gun that is still a solid choice for defensive use the best sights I have seen are the Heinie 'race cut' sights. Add tritium and they make good night sights, they are the one sight system I have seen that is a decent compromise between speed, precision, and low light capability.
For all out competition a Bo-Mar on the rear and a .070-.090" wide front with fiber optic optional is hands down the way to go.