I tried the demo last year again.. loved the physic but felt there was not enough contents in the game.
I bought it last winter. I haven't played another sim still.
On blackwood I believe we have some sort of idea of how the xfg will feel when the new tyre physics will be released.
It's bumpy true, but we can adjust the suspension to make it softer like in any sim.. still a little bumpy but feels better than any sims personally. (yes I played iracing).
I got about 60 tracks installed now, didn't had time to lap on them all and we have a blast without much ping online thanks to a reworked netcode. Something I also enjoy are the realistic setups. We can't arrive on the server and pawning everyone with an alien/surrealistic setup and nkp feels limited and realistic just like iracing in that department and if my memory is accurate LFS will also aim that way in a near future.
I don't have any lag with 1440x900 32b with vsync and 8xAA with everything else maxed with and average card (5770).
NKP doesn't have half of the features of LFS and will never have. It doesn't have the same "polished" I love in LFS. But when you drive the car you like on the track you like, their ain't nothing better at the moment I'm writting these lines. This game punish severely my mistakes on the track, and it does the same for every one else and this is how I like it.
One big letdown to me tough is close racing; the netcode is far from LFS and just a little touch can end someone's race drastically so we have to keep our distances when doing overtaking manoeuvres.
Buy it if you got a spare 20$