Besides NR2K3, I have never had a nascar game for the computer. I have had a few for XBOX and PS2, none with a wheel, and I equally hated all of them. My intent would be to buy nascar heat for the PC from steam because, well, I'm a poor full time nursing student and can't afford iR. Is the game worth the $39 and how does it stack up against iR? Is the simulations mode believable? Leagues? Mod friendly?