Thanks for your input guys.
I saw the previous thread asking the same thing down the bottom of the screen too (that must pop up after a few keywords occur in the thread?) and the RACWA and Minnovation get pretty good recs.
I suppose it's a borderline call on who to go for, but I take Mach082's point on 'green' instructors. Obviously, the more experienced they are the better for me, as long as they're supportive!
And I like AndyRR's point too about the RACWA being a social 'club' as well as a place to learn, so I can get a lot of advice. I figure in the early stages I'm gonna need it!
Cheers again!
Matt