Myronman said it best, handle a few bows. Get the proper draw weight, and draw length, for you, and you'll be fine. 50 lbs, more or less, will work for any deer you'll see. Arrows that work out of that bow, for you, and you're in business!
Differences, nowadays, get smaller and smaller, so how it feels in your hand, probably means the most.
The books by G. Fred Asbel helped me alot.
Enjoy the agony of making your choice!
Woodbutcher