You should try it then. It had a lot of excellent features that were never again seen in NFS games like realistic damage (cosmetic & mechanical), inside views (Shift being the exception) challenging physics, actual fine tuning of the cars, realistic 'parts' marketplace, difficult handling specially with early 911s... graphics were good when it came out but obviously not now. I still play it once in a while, it was darn good.
As for the previous Shift, I can't agree it accomplished what it set out to do. It wanted to be a serious racing game, borderline simulator they lead to believe, but in truth your best bet to win some races was down right dirty play, not only was it allowed to push others off the track or make them spin, you got points because of it.
Not to mention bugs, not only on the racing, but of the engine. FPS was so bad for ATi users like myself that we had to wait for 3 months for a patch or something like it.