I don't have a nitro, but I do have an engage (2.5x10), I think.
I compared it next to a bushell 4200 3-9 and my PST 6-24. The glass is clear and it kept up, it was better, with both of these Scopes at dusk.
For the price, I like it. It currently sits on a 7 mag and I've had no problems with it in the last year.
The turrets feel plasticy. I'm not sure exactly what the turrets material is, but it's a sub $300 scope so I can't complain really.
