I have a Dahon because I wanted a folder and that's what the LBS that does my service has. I ride enough that I wasn't goign to be happy on the Speed D7, the most popular model; when I tried the P8 with the highest gear a little higher, and pieces parts in the gears that simply went to gether better, I was much happier. I really like it for being able to toss it in a car, and it handles well enough to keep up with a group ride if it's not a hammerfest. (I also use it for dropping off bikes at the bike shop 'cause I don't have a car. I can put it on or in my Xtracycle and go to Champaign Cycle and drop the big redthing off and ride away. New employees are inevitably amused )
I *love* the fat tires on the potholes and paths, too.