There are other folders, just saying. I don't see how the failure of your MEC folder invalidates the concept entirely. A non-folding mini velo can have wheels just as failure prone if you buy unwisely. In general however, 20" wheels have the potential to be stronger than larger diameters. But they do not roll as well, unless suspended. Buy a standard size non-folding bike or buy a folder. A quality folder or an established brand. Mini-velo's just haven't caught on. I don't know why or why not. But it probably has something to do with the fact that they have all the drawbacks that small diameter wheel vehicles have but none of the advantages. I mean... why do folders fold? They have small wheels, no? But that really isn't enough by itself is it. FWIW.

H