Mike,
How bad is your shoulder? And how much are you able to pull back safely without hurting it? I ask, because if you've been away from bows for awhile, you'll be amazed how much ooomph a low-poundage bow now has. With todays speeds and carbon arrows, you could probably get away with a 40 pound bow. You see kids with bowkills all the time. Just a suggestion.
I don't know anything about crossbows.
