These rafts look eerily like the Baltiks shown on Ebay. I got a close up view of a Baltik on the Kings last year. Didnt look all that bad really--material looked similar to most of the "big boys" out there. It wasnt all that slippery either. The Baltiks had non removable thwarts but this dude I saw had his boat retrofitted with an NRS thwart system out in by someone up on the American. He was happy with the raft. I have to think the big unknown on these guys is the glue job as others have mentioned.
A 14' Baltik just went for $750 or so just a bit ago--thats a helluva deal---if it lasts just five years you're pretty solid.
I'd bet these Canyon / Saturn are just rebranded Baltiks. In fact check this site out--do these look familiar???