Well, with Brompton you buy into a very well integrated system which is very well thought through. Most other bikes just get you past folding. There are certainly quite a few accessories developed for Ori, from what I can see on their site, but I am not sure it represents such a well rounded system as Brompton.
Yeah... and that Brom can look so gorgeous. I was checking about lightning... Brompton offers 2 dynamos: the Shimano and the Schmidt, but the price difference between the two is extreme... does the Schmidt really justifies that cost?