Personally, I find most of these pretty hokey-looking. The Schwinn Paramount's pretty nice. The others just seem to have really inconsistent looks to them - a mishmash of parts thrown together. As an exmple, the last one (blue frame) is not bad, but the yellow rubber and straight fork throw it off. Classy to me means that all the parts are in sync with each other.
Just my opinion, but I have a definite bias toward classic road bikes.
edit: by "the last one", I meant not the de Rosa but the no-name blue framed one above.