as someone who owns several really good bows, i would also suggest trying as many different bows as you can. some of mine were custom built for me, some were bought used on the classifieds, and the thing they all have in common is that i have enjoyed having all of them and don't plan on selling any of them.
that said, you will definitely settle into a style that fits you best, and at that point, you can drop the big cash on a custom. hard to hold off when you have the cash right now (trust me, i know!)
but even if you decide to purchase one now, you can't beat the buy-and-trade route to check out as many different bows as you'd like. guys on here love to try all kinds of bows and then move on. i have gotten a few steals (and seen a ton more) by watching the classifieds here. great bows, many of them hardly used, at excellent prices. good luck!!