Games : Xbox 360 Controller with 4-way Buttons in Lieu of D-pad?

For GTAIV and GTAV, I find the D-Pad on the Xbox 360 to be quite frustrating. I'd love to have simple buttons instead of a D-Pad, like on the Playstation. Is there a controller I can buy -- wired or wireless -- that will let me do this? (Perhaps I can use a Playstation controller, but that sounds impossible)...