If you're after something that's great value for money then you really can't beat Gt Legends - http://www.play.com/Games/PC/4-/7096...s/Product.html
It is more of a "simracer" as opposed to a "racing game", so is very much optimised for use with a force feedback wheel. I dunno how well it would work with a controller.
There is a thread here discussing it - GT Legends - which includes the link to the excellent little demo version. It's defo the one I would get if I was on a limited budget. 
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