I think Re050 are good in both wet and dry but I will be replacing the rears with MPSS next week before the MOT, mainly based on recommendations from here.
This is only my opinion but have a read of the reviews with a budget in mind, no tire on earth is going to stop the Z fishtailing / sliding if not treated with the respect it deserves, if you go round a roundabout in the wet and boot it on the exit you will eventually bend the car!