I do agree that the finish on the stratos could be better.
Hmmmmm... now there's an understatement. In my opinion it's crap, made worse by how much they cost.
Without elaborating too much on my "rubbish Stratos seats" theme, I will say that the Stratos seats are reasonably comfortable and that having some form of suspension is definitely better than having none at all.
The current model does come with nicer fabric than is on mine but the seat trim is still well below par when compared to something like a Recaro. It is definitely true that these seats can be supplied with mounting brackets making installation very simple, but that is a small plus in my opinion.
I totally agree with John that the Isri seat is a far superior suspension seat. It is really unfortunate that these will not fit in the Canter. If they did fit I would have absolutely no hesitation in fitting these.
As to an alternative to the Stratos... really, there isn't one when it comes to suspension seats for the Canter; not if you want to stay legal that is.
I have not seen the new Canter's OEM suspension seat, but that may be a viable alternative, the caveat being that I do not think this would be a cheap solution. Sourcing one of these from a wrecker would probably be a major challenge and buying a new one... can't imagine how much that would cost.
Bottom line: If I had my time over again I doubt that I would choose to buy the Stratos suspension seats. Personally, I don't think that they are worth the cost.