There are many other non folding bikes that are not 'cheaper Dahon knock off'. Do you consider them as well? Take Brompton for example, very compact fold (16" wheels), good ridablility (40-60km should not be a problem), heavy but rolls nicely when folded, has rear suspension, available with wide gear range (300%) and has a great long term support and part availability.

There are many options, it depends on your budget.

The new Dahon site is here http://dahonbikes.com/index.php/bike..._bicycles.html