Oopps, looks like my comment about real cars and real tracks touched a few nerves, good to see some emotion:-)
I finally found a good well thought out mod in rfactor CTDP F1 2006, for me it's the first mod that I can understand the physics and can see changes in behaviour and fantastic art work on the cars.
For me LFS is brilliant and from what I know it runs great on all types of PC's unlike rfactor that almost forces you to upgrade your pc if you want to be competitive. I have to admitt tho that real cars and real tracks are the big seller in my eyes.