It's great to get so much feedback!
NbyNW - Obviously the person at the bike store knew nothing about the Dahon Speed Pro TT (not Sport Pro - oops). All he did was change the height of the seat. This is not my LBS. No one carries them except this place about an hour away. I am 5'3", so I guess it might be possible to fit, but I hate to buy one without trying and the problem is that at this bike shop the price is full retail, and you can get one online for substantially less. I don't really want to use up all their time getting it adjusted and then not buy it there. Not sure where to go with that. I also found your saddle changing info a good thing for the MU SL, since again, they did not know. But, I'm still not in love with these bikes and they are not inexpensive.
I will still keep trolling Ebay and craigslist for used Bike Fridays.
roguedog - I looked up Xootr again. I had not considered them because they don't fold up as much. But when I looked again, they could be disassembled further if you went on a plane. The gearing is still to high, but you can add a front derailleur and faster tires. I put in some questions to them and will see what response I get and let you know. Does anyone have one of those? I really feel hesitant to just order one without trying it out.
2007 Ruby Comp/Specialized Dolce
2004 Bike Friday Crusoe/Specialized Dolce