I know you all are very tired of thread about supporting your LBS versus going online to BD or Nashbar or heck, even Amazon.com or something and ordering a road bike that way.
I had some time to really do some research and real comparison (i.e. laid out on an Excel spreadsheet). I even got so anal that I studied the geometry of the bike frames and compared one to the other also!
Here's what I discovered:
A mid-level Motobecane (BD) is absolutely identical, all the way down to the choice of pedals, to the entry-level Fuji Sportif (LBS)! I can't believe it... Same bike... Same components... Same geometry... Different paint job/decals...
BD: $400 bucks or so (you finish assembly and tune it up. No real guarantee on careful delivery/handling during shipping).
LBS: $589 or so (already assembled, tested, tuned, and warrantied by LBS).
Now regarding Nashbar, I can't figure them out. I have no idea who they are or what bikes they would be compared to, since they are totally generic and seem like a mish-mash of parts from all sorts of different manufacturers.