Oranoco,
I do not think nitrous is cheating but I always look more faveroubly on a car that makes its power without it. I'm not saying that view is right or wrong it's just the way I feel.

Mike Rainbird,
I would always look at it that an equivalent engine, but with the same power as the NOS equipped one, would be the "better" engine (for obvious reasons), but at the end of the day, 200mph is 200mph