Huh, I had no idea I'd be in the minority when I said Gerstlauer is the best.
1. Gerstlauer - Spinning Dragons (WoA), Pandemonium (SFStL) - I really like the seating arrangement and spin factor on Gerstlauer's. Tame, but packs a fun amount of spin factor.
2. Reverchon - Exterminator at Kennywood totally redeems the ride type.
3. Mack - Siera Sidewinder (Knott's) - this was a pretty good ride, but did not spin as much as others. Capacity also felt slower with a lack of MCBRs.
4. Zamperla - Ragin' Cajun (SFA), Primeval Whirl (Animal Kingdom) - Look, they're traveling coasters you can build on the cheap. It's a fun thrill, with intense spinning, but not what I would prefer.
5. Maurer - Steel Dragon (Waldameer) - Maybe I just got the bad apple, but Steel Dragon was dreadful. Virtually no spinning, which can really put the backward facing riders in a bind. It was just bad.