NT`s shoot great! I had a Damage NT11, then I got an insane axe trade offer, so I took it, and I am back with my NT11 in sig
NT`s shoot smooth. A lot of people say they chop, and all that B.S! If you baby your marker, it will shoot amazing! If you treat it like an ego (Use it, throw it in your bag, and dont touch it), then its going to shoot like crap! The maintance is super easy: Pull bolt out, lube it, clean breach, and boom! Your ready to go. I would say, yes, for the USED price, the NT11 is a great marker! Its insane how cheap you can buy them now. I have seen the Limited Edition one`s as cheap as $500.
I wish they had a better re-sell, but if your looking for a marker to use, no marker in its $5-600 category will be better. Also, I would recommend getting the 45' angled swivel (as seen in NT11 in sig). It makes the look factor amazing, but it makes the feel 20x better. The NT ergonomics are 1 of a kind. Not 1 marker I have felt is better. The NT frame is beyond tiny thin.
Maybe go to your field, and then try one! See if you like it man!