The current Best PC game without a doubt in my humble opinion is RFactor.
Purchase online screenies etc here
http://www.rfactor.net/
I race a lot and am in a team link here
http://www.topsimracers.net/Joomla/index.php
I own the following PC games in my order of time played and preference.
1.RFactor + mods without a doubt the ultimate online racing experience.
2. GTL Great game for pick up and play.
3.GTR Patched to 1.5 is still a good fast racing experience but somewhat finnicky and buggy.
OK so why is RFactor the best. Well the cars handle great and the tracks are superb but best off all the code is open to all modders. This means near enouth weekly you get a complete new mod out that takes the game a step further. Currently i am racing a LeMans McClarenF1 mid seater jobby. Unreal i can tell you in a Marlboro skin.
The other mods i play are the F3 Euro's the PCCC05 Porsche challenge mod The McClaren mod the Protoracer mod The superkart mod i mean shall i go on. Ok the F1 champions mod the Evolution stock mods with oval tracks etc etc etc
Talking of tracks if you want it then post in the mod section of RSC forums found here
http://forum.rscnet.org/forum.php and in no time at all its released for all to play. There are loads of tracks already released and up on servers from Adelaide to Donny from Nords to Anders.
There simply is No other game that gives you better value for money let alone another racer.
This is all happening as i speak as well with modders busy away patching current fave mods and adding to them.
There are leagues running locked servers but a simple reg form fill on there site allows you the PW and they are a great bunch on Rfactor. You stay clean they have no problem with noobs or casual racers.
I find with the open modding community and the hardcore league dudes there is a good balance on RF and respect is shown all over even during public quallys.
You go on as a noob and stay clean they are all helpfull and friendly and before you know it you are racing along side them and getting on the podium. Believe me when i say that a podium finish on RF is an achievement as there are some very fast sim racers out there.
One thing that stands out is the variety you can have for your initial payment. You buy the game online and within an hour of owning it you have a catalogue of games and tracks to last you a life time and all the while more and more roll out the modders door.
Fantastic game.
Thanks to Gjon Camaj