After riding the flagship for some weeks now, I don't get the point about the size/stiffness topic anymore. It's very responsive and easy to control. It shure is a bit of work in moguls but in the end - is't it a sport and supposed to be some exercise?
You get rewarded with a lot of stability. If you don't want to have this hard work, you can simply ride over them: the nose of the flagship floats easily over those nasty afternoon moguls without the danger of getting the nose dug in and make an unintended loop.
This feeling of secureness can't only arise from an over all improoving riding ability 'cause from one week to the other I suddenly was able to make the fastest and tightest turns ever, dared to shoot down the always icy parts of the tracks and even to take (very tiny) natural jumps I always avoided; just by changing from the (bigger/stiffer) Flagship. This board certainly pushed my riding to a complete new level. I never felt that secure and in charge on a board. It's almost as if it hushes "no worries mate, we'll handle that, just go wherever however you intend!"
I'd realy suggest to everyone hesitating whether or not to get such a board: give it a try and check how it feels like for you. I was struggling a lot after reading this and that. But now it is me getting on my mens nerves by wanting to go boarding as soon and early as possible, no matter how nasty the weather forecast, 'cause now I don't only like boarding - I love it
P.S. it can be a big advantage to be a light-weight on a big board. We got huge amounts of pow again. The guys got stuck in the fluffy stuff at flatter parts where I still was floating