Leaving aside the argument about the OPs ability that seems to have cropped up, I think a reasonable scope would be something around 4-12 x magnification, and if combined with a 44/50mm objective would give maximum brightness when set at around 6/7x magnification - so would be bright, clear, and able to use at a higher mag in better light or for HFT set to 10x which many shooters seem to prefer?
So with the above in mind I'd look at either one of the premium brands like Leupold/Burris etc. or try something at half the price like a Hawke Endurance/sidewinder, Falcon Menace etc.
Best advice is to get a look through these before spending your money, different people's eyes prefer different scopes, and sometimes you pay twice the price for a fraction better quality, which is fine if your ok with what your buying, but it's disappointing when if your honest you can't tell the difference.
James