I'd have to say go check out some high quality steel framed bikes at local shops. They ride like butter and they cost less overall so you can afford to get some nice components on there too. If you are concerned about the weight have the shop weigh them and compare to some of the lower end carbon frames. I say lower end carbon frame bikes because in the price range you are looking you can get a carbon ride but the components you get will be lower end which cancels out the weight difference in the frame. I have carbon, steel and aluminum bikes and my steel bike is my favorite so far as ride is concerned. The steel bikes come with carbon forks, seat posts and all that too so I'd suggest you give them a look. Best of luck.