Touché.
My comment about Bromptons was partly tongue in cheek. However, I do believe a lot of the people who buy them do so either because they don't do any research into the alternatives as a result of the brand being the default when they think of folding bikes or because they have become a bit of a fashion statement for people concerned more about image than the quality of ride. Brompton are a bit like Apple or Beats Audio in some ways -- you pay a premium for the name despite alternatives of equal quality (or vastly superior quality in the case of Beats) being available for far less money.
Each to their own, but when I had a 6 gear Brompton for a week to test, I found the wheels far too small for anything but the smoothest roads to be ridden comfortably, and it had excessive flex on the frame. They fold up brilliantly though, and that is still their biggest advantage over the competition. But I own a big car (Toyota Previa) so providing my bike is allowed on the train, which it is as long as it folds in some way, how small it folds isn't really that important. Ride quality and comfort is my primary concern, and that is before you even consider the cost.
Anyway, I received my Tern Joe P24 yesterday at last. And what a bike. It's so good having a bike that folds but, whilst you're riding it, you feel and look like you're on a standard bike. I'm a big bloke (6'2") so I always felt like a bit of a performing circus bear on even the 20" Terns.