I'm a kind of PM, but I've not been on a Prince2 course as I've never worked somewhere that uses it.
What I will say though is that when I've been looking for PM jobs, a hell of a lot of them seem to require a Prince2 cert so it could be rather handy for you.
I'm fairly sure Dave is a PM too, but I'm not sure what type of projects.
Out of interest, what type of projects do you intend on managing?