I have owned 4 SSHD's, the 5-20's. For the price, they are some of the most robust optics I have ever used. Everything on them I would classify as "good." Not great, but far from shitty. Presently, my chief complaint is the reticle. At the time of their release, it was pretty damn good (IMO). However, as we have all witnessed, the evolution of reticles has far, far surpassed their mil-quad offering.
Many years ago, I had actually emailed Chris Farris (the owner of SWFA) and asked him if he would be developing their reticle line. I got a rather emphatic "no" as a response which sucks because I think they would have remained much more competitive. To be honest, if they would develop their reticles and offer a 34mm tube, I would still be a buyer (I would still be a buyer even if they stayed with a 30mm tube).
It has been observed that they have maintained their value also. Used models, with illum, are still hovering around 900.00 or so.