audioguy, I disagree that the method you mention works well, certainly not for both sides of the same LP, because warps in one direction that may be ameliorated would not be affected as much or at all, when you flip the LP. I do have a SOTA reflex clamp, so I could give it a try for at least some of my warped LPs.
I just found the Orb too. Much less expensive than the Furutech, but still not exactly cheap. Anyway, that seems to be the best device currently available.