We had a Saturn 6 for several years. They are a hydraulic nightmare at times but the ride did well. The biggest issue, our season is 45 weeks per year, was the the bushings in the crown and sweeps. Every other year we had to have the bushings replaced, they were heliarc'd out and re-welded them back in. Each sweep has two pins top and bottom. The Sweep slid into the crown where a larger tube was connected to the center and then the two pins were put in. The action was pretty intense and those bushings would wear out - not a big deal but the FIRST time we found out what was going on - it was one of those "holy crap" moments that we get out here sometimes.
The nitrogen bladder in the hydraulic tank was a pain to have to check and we had to replace that a couple of times. Again - when the sweeps come down BANG into the track around the center - it's an eye opener. We bought ours from Jerry Wisdom and there were no books, fortunately Frank Sutton was available to talk to and we learned more about that ride from him than anyone.
The seats have pretty high backs but if your a taller person you did get that "whip" feeling as it came down around and back up again.
I've heard that some of them had diesel motors on them and that it "gassed" people out when they rode it.
We sold ours' off to Mexico and last I heard they loved the ride.