I just got back from my well trusted LBS. After talking to them they advised me to not go with the Single Speed Dahon Boardwalk ($200) because it has a coaster hub. After telling them about my other bikes and my style of riding they recommanded the Boardwalk 7 Speed ($300) with a free wheel. They said that over the past 4 years Dahon's quailty has improved, and that they recommand them.
I'm kinda big on supporting my local "Mom & Pop" bike shop, so I've made getting the Boardwalk 7 Speed as "Plan B" if I don't find a inexpensive Raleigh 20 soon.