I've had good luck with Nicon's in the past. Clear glass, holds accuracy, and works well in hunting conditions (cold, wet, snow, fog, ect). I have a leupold on my M1a and only ever had one problem in many years where one of the lens came loose, which Leupold fixed. I have a cheap simmons on my garand that works well.
For hunting, I'd stay away from a fixed 10x or even 6x. A 50 yard shot at a non-fixed object will be chalenging with 10x, a little less so with 6x. I normally run 4x when hunting and rarely crank up the power unless I'm looking for horns or a longer shot presented itself.
I believe Nikon makes a 4-12 scope in the 200 dollar range. I would look into those scopes as they have a lot of usable power, lower for hunting and 12x for targets or extreme long range.
Nikon has a Lifetime warranty also. http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCgQFjAA&url=http%3A%2F%2Fwww.cabelas.com%2Fassets%2Fproduct_files%2Fpdf%2Fnikon_warranty.pdf&ei=vtJGU6KiJuSwyQG8_oDgDQ&usg=AFQjCNH6TY92cr1nZAvpFLgRJ3g-WZ8XYA&bvm=bv.64507335,d.aWc