I bought one used, about 3 years old, and it stills works great a year later. I've cleaned my entire collection by now--about 600 LPs--and I'm astonished by the improvement on some records that were previously cleaned with an Orbitrac or Discwasher D2.
Surace noise was reduced to levels that, I think, sound better than new. Of course, a beat-up record can't be helped. But there were more than a few LPs that I cleaned with an Orbitrac and abandoned, thinking they were shot. Then I cleaned them with the RDII, and they were playable and even enjoyable. Sure, it's a pain to turn the record by hand, but for the price, who cares?
This thing is tough-as-nails and lasts a long time. Try it with Tourmat RCM fluid from Music Direct and the Disc Doctor brushes, which are a 300% improvement over the brush they give you. Buy an extra pack of Vac-Sweeps and you should be good for a decade or longer.