I do not think the cost between Brompton and Bike Friday and lower cost folders are worth the differance. I have an older used Dahon and a new Greenzone. Both of these bikes are problem free and a joy to ride. This summer I did the Erie Canal tour with 550 other cyclists. There were 3 folders on the tour; my Greenzone and 2 Bike Fridays. Both Bike Fridays had major problems while on the road. My cheap Greenzone ( $ 200 new) had none!