I tried commuting on the MEC Origami folder (made by Tern) but the bicycle simply didn't withstand the use. After six months, the handlebar latch developed play, the cheap spokes started to bend or they broke, and worst of all, the main folding hinge failed. (MEC has a good refund policy so I returned the bicycle.)

I am looking for is a non-folder for resiliency, with 20" wheels. It seems that folks call this a "mini-velo".
I want to use a Shimano Alfine 11 IGH on the bicycle, so drop-outs must be suitable.

I would buy the Dahon non-folding Smooth Hound if I could find a large size. I know the bicycle isn't made anymore. I see from other posts here that Dahon made a "Hammer Head" but I don't know if it was non-folding.

Biria makes a model called the Mini 20. Does anyone have experience with this bicycle?