Good Racing Games for the 360?

hey guys i was just wandering what are some good racing games on the 360? i had Forza2 but did not care for it and Burnout i cant afford right now. I have NFS ProStreet but i just want a new game..... i have been looking at PGR4 is that a pretty good racin game? i played the 3rd and it is pretty good but i want to know what u guys think....

thxs

forza if you like realistic racing...pgr for more arcadish and burnout for jjust brillent arcade!

also Dirt is a nice game and you should take a look at it...

to "ag1002 "

o christ uv got 2000+ hours on warld of warcraft!!!!

n00b?lol

PGR4 has a dmeo you can download from Live, so give that a go.

I'd also highly recommend DiRT, though it is rallying and off-road rather than street racing, so it depends what you are looking for. GRID has also just been released, and there is a demo of that on Live.

PGR4 is much better than PGR3.

Test Drive: Unlimited is fun too, though it's more of a relaxing driving experience and doesn't have an awful lot of structure. It also looks its age, which you'll have to get past.