I have edelux I and its fine, but Schmidt does keep pushing the development.
I have a house in town , so that is more than enough ..
does make it hard to resell the E6 primary and secondary pair I got a few years earlier .
secondary never got used , not that fast.. I dont fly down Mountain Passes at Night.
B&M has a much better headlight now too .. top of the line has a USB jack
my Brompton got their compact Eyc T..