Folder Fanatic,
I hope you enjoy your R20 as much as I have mine.
I know that high end Dahons, Moultons, Birdys and Bike Fridays are lighter and possibly faster, but that's not what the R20 is all about. Sure get it as light as you can, but it's more about its endearing durability and ability to take loads, even the revered Jur has alluded to that.

Francis Paddy Sean O'Shea Mulleady,
Don't know what the high end Dahons flexibility factors are, but if they use the same type of stem that the el cheapo models use, which are inherently flexy, then they are IMHO, an accident waiting to happen if ridden with vigour and gorilla like enthusiasm.... hint hint. Best for pottling I say.

Now go away you silly little man, and leave me alone, I should be studying.