Dahons are a good introduction to the world of folding bikes. I purchase my first one (a Boardwalk) from my LBS. This entry level bike was a good teaching tool. The Cadenza is another except that it does not fold so small as mine does. That may or may not be critical to you. See if you can list what you really want and expect from a folding bike (example: are you taking it on a train or bus, or in a private car?) and other uses you expect to do with it. Do you want a high end performance bike? What type of riding you tend to do-commuting, utility, cruising about the neighborhood, long distance touring, racing, etc.