I've been riding a custom Ti frame from Strong frames for a few years now. One of the features I had to have was sliding dropouts from Paragon Machine Works. The main reason I wanted them is because I tend to bend my derailleur hanger often.To fix, all you need is an allen key and a new dropout and it's done in a few minutes. No fuss , no hassle; you got to love that. Another reason is that when I’m far from civilization and my rear derailleur snaps off, I can run it as a single speed easily. The bonus, one that I didn't think of at the time, is the versatility. With the constant changing standards in the cycling industry; I can now run pretty much any hub size on the market. Now go get yourself a custom frame made up, you won’t be disappointed.