6m not too flightly, stable, not overly fast for a small kite
9m the allrounder, good pull, turns smartly, drops back with the wind riding down the line
12m excellent for a "big" kite, turns well, good for waves in marginal wind,
no relaunch issues so far (dumped the 12 in the surf yesterday got washed throu and completely submerged,kite just popped up and relaunched it in a sec), self launch a doddle on the beach, self land easy with fifth line
seem well made, bag servicable without being spectacular
bar ok too, iron heart less clumbersome than 07
dump valve at le tip an excellent feature, just roll the kite up like a carpet
only issue - have used same bar and lines (20m) on the three kites, stock standard set up
back lines (or more correctly back pig tails are too short),all 3 kites choke easily so need some front line depower to adjust for that issue will rectify myself
otherwise hard to fault for surfing, turn well, upwind excellent, very user friendly i dont do anything else so cant comment jumping etc