Schallers every time for me. The Dunlops are an elegant design, but it only takes some kak to get in those tiny ball-bearings and one day they don't engage properly and you drop your pride and joy. As happened to a guy I saw a few years back who had a lovely Les Paul sunburst, which ended up with a nasty broken headstock. Upset me nearly as much as him!! In 23 years I've never had to worry about the schallers. I make sure the nut is tight on the strap every now and then and thats it. :D