Soma Rush...it's not lugged but it is made w/ good tubing and decals are removable. You can buy a threaded or unthreaded for for it, too.

IRO Angus-reynolds 631, threaded fork, black.

I think both those are good frames. I have a Jamis Sputnik which I love but I don't think they sell just the frame and it definitely doesn't have lugs or removable decals.