I currently have a Brompton w/ an SA 3 speed 177% and an extra 38 tooth chain ring which I use to climb steep and long grades. I like the Brompton for the fold, the fenders, and its carrying capacity. I have been thinking of a Swift folder and was wondering if anyone has extensive experience with both would I merely be duplicating the Brompton or would it add a different and useful set of qualities? I also have a fuji track, an old rigid Cannondale mtn bike and a surly steamroller and I wouldn't mind thinning the herd.