Good point edt
my first kite was a 11.5 kahoona 2010- loved it . Great range , great lift but the bar pressure had me done after an hour or 2 .I know the current kahoonas have much less bar pressire But at the point i sold it about 18 months ago i was at a much lower level so im not sure id still like it and i hear the current kahoona has changed alot.
I loved the 2010 Kahoona 11.5m also, except for the high bar pressure. Moved on to the 2011 which had much less bar pressure. 2011 had less low end by a knot or two, but really improved high end (fun in 5 more knots than the 2010). I didn't think they were very good for loops though. If you liked the 2010, I think you will really like the 2011. Just keep in mind the change in the low end, the 2010 11.5 had the windrange of most 13-14m kites.
I moved to Rebels now, which boost a little higher, but very stable like the kahoonas. Rebels aren't very good for loops or wakestyle though.
From your description of "do it all" I would say Naish Park. Not the biggest boosting kite for airstyle/hangtime, but it does everything pretty well including wakestyle and loops. You can't have it all!