Leupold and Nikon make excellent scopes that are good hunting scopes in the power range that are good for hunting. Leupold may have the edge in their warranty and warranty service. Even during hunting season their warranty/service turnaround is on the order of 2 or 3 weeks from your door back to your door too. I've never heard anyone complain about their warranty service, which is more than I can say for other scope makers. I've had several and still have four of them on various rifles.
I have no idea what Nikon's service is like, but they have a lifetime warranty too. The three I've got are excellent scopes, two Buckmaster 6-18's and a Monarch 3-12.
I'd also recommend no more than 9 or 10X maximum power for a variable. It won't help for any reasonable hunting range and the lower powers (2.5-3) are good for heavy cover. Higher powered scopes are larger, heavier, and cumbersome IMHO.