Actually, a folding bike was not really on my radar screen. I don't mean to be a troll but:

1) I had S&S couplers put on my dream bike, a 1991 Bridgestone RB-1 that I have completely re-built and tricked out with exactly the components I want. (Phil Wood hubs, Dura-Ace and Deore XT shifting, TA Alize triple chainrings, Selle Italia Turbo Speciale saddle, Dura Ace brakes ...) There is something to be said for riding 'my bike' set up exactly the way I want it rather than a rental or some other bike.

2) I am an 'uber-Clyde', I am pretty sure that I am well over the weight limit for most available folders.