Also take into consideration what you're going to be using the bike for. A general rule of thumb is that unless you race on a regular basis, there really is no need for a carbon bike. justme is absolutely right when he said "It's tough to generalize a bike based on it's material", and more often than not, for people who do very little or no racing that take the time to test ride many materials (carbon, steel, Ti, scandium, aluminum), usually end up on a locally fabricated steel or Ti bike for superior ride quality attributes.
Take note that most carbon frames are made in Taiwan and China, and the manufacturing processes of carbon is really, really dirty. In these Asian countries, there is very little regulation on industrial waste, and carbon fiber dust is really nasty if not disposed of properly. Many of these carbon manufacturers' workers are suffering from black lung disease, the same ailment what coal miners get. They either vent it out in the street for the general population to breathe in, or they re-constitute it into the water system that flushes out into the ocean. Not all Asian factories operate in this manner, some are very current with industry standards, but unfortunately most still pollute to no end.
So, with that being said, I say if you're not racing much, or not at all, you're much better off with a handcrafted steel or Ti bike made locally by a master craftsman. And if you travel a lot, an S&S coupling system a very nice option that most builders offer now.