I don't know where you live in regard to the geography but if its at all hilly and/or you're new to cycling as you say don't get a compact get a triple. It doesn't add that much weight and it's nice to have those lower gears when you need them.
As Monster Pete said you don't have to spend $2000 for a decent bike to get into cycling. Guaranteed you will find things about any first bike that you wish were different after you've been riding a while. Some things to consider what type of riding are you going to be doing? Strictly recreational/exercise? Commuting, touring? Running errands? If you are just getting into cycling you may not have the answer to those questions so I recommend a smaller investment or a good all arounder.
A good all around bike would probably be a cyclocross bike that lets you use a variety of tire sizes and allows clearance for fenders. Look for one that will let you mount a rack for carrying things. Cyclocross bikes come in aluminum, steel, or carbon or a combination. It doesn't matter if you never take the bike off rd. the versatility is what your looking for. If you can find a bike that will let change tire sizes, mount racks and fenders that isn't a cyclocross bike thats fine too, but it seems to be difficult to do. Find a bike shop who will fit you properly and guide you through this process so that you will be happy with your purchase a year from now.
Last edited by Ground Hog; 09-05-11 at 01:08 PM.
Reason: typo