I'm not so worried about speed on a Brompton, more comfort of ride, and here, and I stress for me, the Kojak wins over both Marathons. In the end it's the cyclist who determines speed, anyway, just as it is with all bicycles.

The article was interesting, but mostly irrelevant. In the end, as seasoned Brompton riders know, speed is important, but more so in removing the rear wheel in the rain after a puncture!