I got GTR2 today, and so far I am impressed.
It pushes my system (Athlon AMD 4200 Dual Core, GeForce 7600GS, 1GB RAM) pretty hard when its raining and at night with a lot of cars. Graphics are sharp and crisp if not mind blowing. I am yet to try it online, but will be doing soon.
The AI is good and the physics, as far as I can tell are pretty decent as well.
So yeah I recommend GTR2 from what I've seen of it so far. The only thing that disappoints me is it seems to have recycled a lot of content from GTR 1, this isn't necessarily a bad thing but to me it just seems like laziness on the part of simbin (the guy on the radio, for example, uses exactly the same sound files as in GTR1 as far as i can tell).
As for rFactor, I can't get into it at all, my main gripe being the lack of a save feature and a lack of servers running game default content online. I know a lot of ppl on these forums have a high opinion of it though in comparison to other sims.
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