Pat & Jim:
We had the "rest easy" sofa recovered from the ugly cloth to a nice leather covering about a year and one half ago in our 2004 Journey. The cost was between $1400 and $1500. We had it done by a company in Phoenix that specialized in boats, aircraft and RV's. The sofa came apart into about five pieces that the guys took out, recovered and reinstalled without taking out the passenger seat, etc. It looks good and we are pleased with the outcome.
While the sofa was out, I cleaned and lubed the motor, drive cables and mechanism, so the action is much quieter now. There is a motor in the middle behind the frame and the drive cables extend to the mechanisms at each end of the couch. It is a breeze to work on when the couch is removed, but would be next to impossible with the couch in place.
We seldom extend the sofa, so I don't know how quiet it still is. Anyway, good luck in your decision to recover or replace. Our sofa sits in the slideout, so replacemednt was an iffy choice.