As I should have stressed more so: This is really a survey of RISC OS users who read Drobe, and it's up to your imagination as to whether or not Drobe readers who participated represent the market as a whole. The high percentage of A9 users shows that these people are probably more tech savvy and 'active' than others, and therefore more likely to vote in the online poll. The same could perhaps be said for Iyonix users. VRPC users could be more casual and may not bother with websites like drobe.co.uk. It was an interesting experiment but I don't think it should be read as gospel. Or maybe I'm being too critical.
Either way, it'll be most interesting to compare with Archive's. I like the idea of breaking down each category to see which combinations of machines are most popular. I'll work on that a little later.