In my experience, if you get a stiff 20-inch folder, capable of fitting 406-50 Big Apples, you will have what you want. I have not ridden a Neutrino, but I would say it would suffice, though it does not fold. Two bikes that I have that I would recommend is the Xootr Swift and Zizzo Liberte. The Swift is stiff, with no folding joints. It does fold but the fold is large. The Zizzo frame is stiff enough for me. The fold and weight are on light and small side. It was a little hard to mount the Big Apples on the Swift, but they went on and no problems with them since. My experience with Dahon has not been as good. I had a Mariner and a Boardwalk. Neither were stiff. Their ride were spindly.