Tire Advice on Base 18's
 

Hey guys this my first post so bare with me. Im in the market for new tires and want to uprade. I have the stock yokahamas 225/50/18 on the front and Sumitomo HTRZ3's 245/45/18 on the rear. Im replacing just my front tires this week and then my rear tires in about two months. I would like to put wider tires on both the front and the rear, I was thinking of doing 235/45/18 in the front and 265/40/18 in the rear but I am open to suggestions on what size I should do. Also right now im torn between the hankook v12 evo's, the bridgestone potenza re760's and the Dunlop direzza sport z1. I am just a spirited driver that like performance. I do not use my Z on the track. I looking for the perfect combination of size and brand for daily driving performance and comfort. I am open to any new ideas as well.
Thanks