I did a bunch of research when I put my pedal board together and settled on the Cioks Ciokolate. While it has only one 18v out, it also has several that can be set for 15v, (which will often suffice for an 18v pedal), as well as many other options, including a couple of AC outs. It was, by far, the most flexible power supply I could find. I posted some pics on a pedal board thread around here somewhere.
Bill, tgo