Went thought the same thing a little over a month ago -- learned a lot in the process. Here's a thread that sums it all up: http://www.huntingnet.com/forum/tm.aspx?m=2304751&mpage=1&key=?

Bottom line -- shoot plenty of different bows - side by side if possible, be prepared to spend more than your budget, and while everyone has a favorite bow or brand, pick the one that feels best to you. Then get plenty of practice to get confident with your shots.