Hi
I have a Montague Paratrooper. I notice the newer range includes quite a few 700c wheeled bikes.

For the use you describe they may be a bit bulky when folded compared to a Dahon.

I understand your concerns re small wheels but they are usually okay.

By the way I have modified my Paratrooper to make it more road and travel friendly. By fitting 24 inch wheels it is quite easy to dismantle it and pack it in an airline legal suitcase.
Rob