Looking at those two links now. Thed CO2's are fantastic, very stable with a large wind range. So, with the 12m and 16m I'm pretty much covered as a beginner. The safety system is solid and reliable. I found that although the CO2's may not be as nimble as others (remember they are low aspect-ish) I can't see me growing out of them quickly. Put it this way, I got my first air, completely unintentional but I wasn't worried, the kite just lowered me back down, carried on............and then I fell over. The kite seems to find it's own way back to the top of the window, ready to go again.