Welcome to the forum. Well since there is so many to chose from in your price range it would be hard to give you just one recomendation. But i think your best bang for your buck is going to be a T/C omega. I have seen the Omega z5 and the thumbhole stock Omega here at my local walmart for $298.00 not a bad price at all. I personally do not own one i have a CVA wolf and it kills just as well as more expensive ML's out there. I only paid $134 for mine brand new. I get 2.5 inch groups at 100 yards all the time and thats with open sights. Another one i would recommend is the CVA kodiak or the optima pro.

Happy hunting.