Good points, both of you, and thanks!
I guess I was asking because it seems like many, many people MUST be getting bikes sight unseen, but it's obviously knowledgeable people who are doing that. I suppose my first proper road bike should be something maybe a bit more common, so that I am able to do some test rides to see what feels better. I just don't have enough knowledge yet to go with something I've only seen in a photo.