If your planning on having kites for 2+ years go for 3. It will spread out the wear and you're gear will last longer in most cases... For your CDL class I would recommend the 8/10/12 so you're never out the proper kite... Plus you won't have to override any of them either, which will decrease wear and tear..

What about 12 ,10 ,7 ?

Thanks!

9 seems more resonable, 10m prolly starts very early and ends way before 9 is overpowered.

low end with TT for 10,9 and 12m (74 kgs) to be able to do tricks?

I had 2009 and 2011 RPMs 10m.

I love make big loops and all thats stuff, but I think for loops FUELs are much better shorter lines and C form to move quicker and sharper.
I mean big loops with RPMs feels like hell, really pull hard maybe harder than other kites, but im not sure its the best for loops. could be really hard landings.

post data: I love my RPM.

Its a very over all kite, performing good in many aspects.