Thanks so much, everyone, for all of the feedback. I'm still looking at bikes locally (hoping to ride a Jamis Satellite tonight if the weather cooperates), and maybe a Felt this weekend.

I called the Terry dealer that is 3.5 hours from me and was super excited to hear that they have both the 44x50 and 46x50 Symmetry on the floor right now. I can't make the trip this weekend, but perhaps next weekend?? They offered to bring in any other Terry that I'd like to try, too.

Going back to the great LBS I visited this weekend-- I don't think they are thrilled with the idea of bringing in the 44 Dolce for me to try; the salesguy was pretty firm in that he thought it would be too small for me, and the same with the Trek 47. Not sure if he thought I wasn't serious enough, or if he's just worried that the shop would be stuck with the smaller bikes or what. An off note in an otherwise good experience there. Regarding the Trek, though: there's a group of three Trek concept shops in town, so I may be able to ride the smaller sizes through one of those. There are a ton of Trek authorized dealers around the area, too, so I'm less concerned about that (though bummed that Trek eliminated the Madone 43 for 2012).

I'm really leaning towards getting a "go fast" bike for now and finding a heavier touring/sort of CX bike for rail trails later. It seems like my mind changes daily on this, though, so grain of salt and all that. I have to say that I never thought I'd want/need more than one bike and now I want ALL of the bikes! I can picture myself with several in my "stable" for years to come, and I'm pretty sure that DH is just as hooked... now I just need to finish grad school and make some money to afford all of these nice bikes!