I am looking into buying a BSA scope at Walmart for 78$. Iam not sure but I think it is a 2.5-12power by 50mm. Is BSA a reputable scope? And should I go with a 40mm or 50mm for deerhuntin? For this price range would you reccomend something else, bushnel, simmon or should I stick to the BSA. I would really like to buy a Redfield or Leoupold but cant spend much more than 80$. Could you please help me.