Launcher 7 Donate is an amazing laucher, better than original WP7 launcher. By far my favourite launcher.
I also like the new Touchwiz of SGS3 and ssLauncher that is the most customizable launcher ever (even if it isn't easy to work with it).
I've never liked Go Launcher, it was laggy with stock GB and it isn't beautiful.
Apex and Nova are both very good if you like stock ICS, but I prefer Metro UI.