Thanks so much for the replies! I've narrowed things down a bit, but it looks like I've also got a few more things to think about now, too...
At this point, I think I'm still learning towards the Trek 7200 WSD, but I took a look at Specialized (specifically their Ariel and Myka line) and Giant (their Sedona line) and they've certainly got some nice things going on. I also looked a bit further into the Cannondale line, and the Quick Feminine line looks nice as well. I know you mentioned, Industry_Hack, that the bikes I'm looking at are generally going to be the same within my price range, but is there any advantage one brand has over any of the other brands?
Also, thanks for pointing out the handiness of rack mounts... that's something I definitely need for commuting to and form work and its also something I would have most likely forgotten!