A bunch of us were chatting with a bike shop owner about bikes one day recently. A guy had come in with a NOS Blue he was thinking of buying and wanted to know the LBS's owner's opinion on the brand. (Just as the shop owner his/her opinion, and you'll get more than you bargained for!)
According to his observations, many new cyclists shop for bikes backwards.
They focus on components first, then frame (and often never even consider the wheelset).
Components are easily upgradeable and changeable. Therefore, they should be the LAST thing to consider on your list. First should be the frame. What frame fits you best? What frame feels most comfortable to you? Ride them all...ideally one right after the other, so you can compare one against the other. And don't discount the wheels that are on each bike. Ride one bike and ask the shop to swap out the wheelset on the same bike and you will be amazed at the difference in ride.
And...if you intend to ride for a long time, a few hundred bucks..does it really make that big a difference? If you ride 200 times, that's a dollar a ride.
2007 Seven ID8 - Bontrager InForm
2003 Klein Palomino - Terry Firefly (?)
2010 Seven Cafe Racer - Bontrager InForm
2008 Cervelo P2C - Adamo Prologue Saddle