Search my username in the folder forum, I've mentioned them a few times in a bit of detail.
I tested them quite a bit a year ago looking for my new folder, my thoughts from 12 months ago : Funky looking bike, clever design, not a folder in the Brompton or even Dahon sense really, quite a chunky package all told but fast and fun to do. nice to ride, comfy place to be and the old numbering 2,3,7 etc lots of options, belts, CVT etc that were nice but I hope they've done something about the very alarming frame flex through the hinge under braking. The first time I braked on one, I climbed.straight off and told the sales staff it was broken it moved that much. All the store bikes were the same and apparently it had been designed to do that. I found I had to be a bit counterintuitive and never use the front brake in isolation as a slowing down manoeuvre as I do on every other bike I've ever had, feed in both brakes together and it felt better and more confidence inspiring. I'm still not sure if they were totally on the level on so much flex being designed in, it seemed quite odd to me to make a bike that frightened you under normal braking.
My other minor gripe was that the built in lighting, while cleverly designed and situated, seemed flimsy, easily removed and not really an only light answer.
I was tempted and preferred it all things considered to the Dahon & Tern types, but the Tilt 7 I wanted (funky colour scheme too, maybe not to everyones taste but I loved it) seemed permanently out of stock and on balance I am happy I scraped together a couple of hundred quid more and took the more conventional Brompton route in the end. I think on riding the Brompton now, I have got the better bike of the 2, even 3 v 7 speeds I was comparing.