I have a DIXON throne with a backrest, it is the same as a Dixon I am told.
The saddle is a motorcycle seat shape, but a lot smaller than the Tama/Pearls. It feels strange when you first sit on it, but after an hour or so you don't notice anymore. The vinyl is the lowest quality, which probably makes the fact that your bum isn't contacting much of it a blessing. The backrest is G-R-E-A-T! It is a lot higher and wider than the Tama one, sort of like one of those cheap office chairs with the crappy caster wheels that never roll straight.
All in all, this is a relly well built, cheap, functional throne. Unless I was planning on taking up drumming as a proffession, I would never consider anything else (definitely not the Tama, damn that thing is expensive!)