Then you should possibly choose one that fits your needs, not the one other people like. The bags are surprisingly different in practice and almost everybody seems to have his personal favorite, based on individual needs and taste. I own a bunch of Brompton bags. The three I use the most is a Carradice Stockport City Folder, the T-bag and the shopping basket. The Carradice is my daily workhorse for going to the office, the t-bag for business trips and travel and the shopping basket for shopping. Before owning the Carradice I was using an S-bag for the commute for a couple of years - as good but less good looking, slightly different regarding characteristics. It is barely used now. I also own a C bag wich I only use rarely: Too big for my normal daily trips, too small for travelling. I'd sometimes like to have a smaller bag additionally like the Barbour bag Brompton invented for a short time along with the Barbour edition bike. But with this I did not like the fasteners (too slow) and I do not like the current other smaller options from Brompton as well as from the other manufacturers that I am aware of.