I drove a stock M3 recently and the difference is pretty damn obvious. Mine is better.
Nitrogen pressure has been rock solid, set-it-and-forget-it. I've got close to 5,000 street miles on these and dozens of autocross runs and the pressure I set two weeks ago is consistently the same when I check it the next time. This is a good thing, as I've had friends with Motons in the past that bled down after a couple weeks.