So far my experience with xcircuit makes it more or less comparable with gschem. I really like the fact that its save file is PostScript. (It doesn't lose anything when you save in that format!) The UI is really not discoverable at all, but in my experience the same thing is true of QCad, AutoCAD, and other software that does similar things, whether free or proprietary. There's a good xcircuit tutorial, and the non-obvious UI is actually pretty quick to use once you get used to it.

What schematic capture program do you really like, and what is its UI like?