I won't make recommendations, because I've found over these years, that everyone has different tastes, different price points, different desires in performance, etc.
With that said, I bought my first real road bike 3 years ago. It was an inexpensive entry level bike- a LeMond Reno WSD (women specific design). I got it on sale for $750 (regularly $850). Before I decided to go with that one, I tried out all sorts of bikes-- Specialized, Felt, Trek, etc. To me, that's the biggest hurdle. As most of you know already, I ride the hell out of this bike. It's been on century rides, and I've logged almost 3000 miles on the thing. It's been a great little workhorse, and with proper maintenance, I plan on riding it for a few more years. Only this past January did I replace the chain, derailleur, and got new tires. I could probably upgrade to something more expensive and lighter, but right now, this works for me.
As Phil suggested, you should probably narrow your window to what you're willing to pay, and then look at what's available in your price range. Ride LOTS of bikes... no one bike is like another, and if the bike shop is reputable and decent, they won't steer you towards buying something that doesn't work for you (i.e. in my experience, avoid Performance Bicycle like the plague, and all their "packages" and "bonus points" programs, or any of the big-box retail stores that sell bikes as a part of their enormous inventory-- I haven't had experience with REI/Novara bikes, so I'll refrain from lumping them within that big-box category). In fact, most reputable bike shops will go out of their way to make adjustments for you BEFORE you even test ride it (seat height/pitch, handlebar height, etc.). Ultimately, if you plan on riding the bike a lot, you need to find one that is comfortable.
I'm sure there are tons of bike review sites... just a precursory google brought up
http://www.roadbikereview.com/
Another good idea is to talk with your local bike shop, and see if they (or they know a business that does) sell used or refurbished bikes. I know at least here in Portland, several of the pro-riders often retire their bikes at the end of each year, and you can get a pretty top of the line for sometimes as much as half the original cost (and with a pro-rider, you'll know that they took pretty good care of it, barring any massive crashes).
Good luck!