G27.
Profiler feedback at 100%, damper and spring effects at zero, centering at zero too (those zero's are because I am told it's always better to use the ingame settings for effects and centering).
Rotation is at 900.
FF in the game is full right (although I only feel feedback when on gravel).
Rotation is at one third: this way I don't have a centering force when I slightly steer but only a little when I really have to turn the wheel: so steering takes no real effort (I don't have to push against the centering force) but I do get that nice smooth centering when I slightly let go of the wheel after a bigger turn: it's really nice feeling that leather slide through my fingers until the wheel is centered again... The force I need is nice, not too much, and the wheel doesn't jump back at once but slowly and smoothly. Feels almost like it feels in my real life car (which isn't a truck but it feels good anyway). Everytime I see a big or sharp turn coming I am looking forward to letting that wheel slide through my fingers, hahaha!
I love my brand new G27.