20" wheel, belt drive, almost as good fold as a Brompton
There's where it is.
I know the Brompton is the best for the fold, hands down. However, I'm willing to compromise on the fold to get the following:
Belt drive with standard components.
20" wheels so I can run studded Marathons: this will see winter use.
Really just more standard components all around.
Tern looked like a good option, but I've read too many stories about frame failures. Compromising on the fold means obviously not quite as elegant and compact, but still want multi-modal friendly.
__________________
Good night...and good luck