RE: Poundage?
Go with the draw weight that you prefer. You are the one that is buying the bow and it's your money. There are a lot of people that shoot 60-70# bows.
My buddy had a Matthews that only maxed at 58 lbs. You are not guaranteed to be over 60 lbs with a 50-60 lb bow.
Go with the maximum draw weight that you can shoot comfortably. That means that you can sit in a chair and pull it back. However, if you haven't shot in a while even a 60# bow will feel heavy if you aren't working our regularly. (Work out regularly to protect the body)
Remember what Roskoe is saying. The bow is more efficient at maximum and if you are not going to shoot it regularly (deer season)at the max weight then go with the 50-60# bow. Check the max weight before buying to ensure it goes over 60#'s if that is a requirement.