I've got some Toyo Proxes T1R in sizes 225/50/ZR16 and 245/45/ZR16 with about 6000 miles on them. The traction is ridiculous. I've got a stage 3 twin turbo and the tires will not break free unless I deliberately pop the clutch out. I've never had problems with them in the rain either. A bit of hydroplaning, but they always grab the road immediately thereafter. Overall, I think it's a great tire and I couldn't be happier with my choice.
Just make sure you get them mounted correctly (they're directional tires). Sometimes the employees at the shop will put them on backwards, as they did in my case.