All kinds of good stuff here. Spaw, I use a capo a lot (on a six string), and generally favor the Shubb, largely because you can adjust the tension to suit you (I'm very particular about this). But the curvature of the bar is a little too much for the flatter fingerboards on my Lowden and my Larrivee; if it's the right tension for the low E string, it's a little too loose for the D and G. Perhaps I'll try the razor solution; thanks for the tip.