You guys with t3s. Are you using the factory supplied rings, or something else. I've heard that the factory rings suck? They're not the best looking system I've ever seen, but they seem to work fine for me.
Anyway, the Warne Maxima rings are a good aftermarket option. They are well-built, strong and reliable. They are offered in both QD and fixed type rings in both medium and high rings.
The factory rings never bothered me, but on the ones that came without rings I've been quite happy with Warne's Tikka rings. They're pretty heavy, but they work really well.