http://www.qrpkits.com/bitx20a.html
I'd roll my own from scratch but quite frankly I just don't have the time anymore. I don't really enjoy building stuff THAT much, especially when I have a full-time job where that's pretty much what I do 40 hours a week. I do however, like kit building because I know I'm not gonna have to screw around tweaking and twiddling and hunting down hard-to-find parts to make it work (hopefully).
Anyone have any experience with these? It'll do 20 meter phone (QRP) and of course, PSK.