Oh boy... opinions on scopes are just as bad as, who makes the best pick up trucks!
We sell a lot of Nikons, and have had good luck with them, we did however have a spell were we where sending 3 out of 5 Nikons back for repair. That has stopped as of date.

As said, Weaver is making a pretty good scope for the money nowdays.
Sightron is good, Burris, Leupold... the list goes on.