picked up the uk demo kites last week at the euro championships.
the psycho has ridiculous amounts of depower, i think 25 knots on the 12 m might be possible for heavy weights.
realistically the 15.5 and a 9m would be a total two kite quiver. 7-35knots easily with good overlap in between.
if you are riding foils then you'll like the ease of use and simplicity but be blown away by the depower and jumping ability. double loops in 5mph on the beach with a 12m. no problem.
if you ride toe-nail kites then be prepared for a new experience, the bar action and depower is exactly the same but the handling and ease of use especially launch and relaunch is out of this world.
i don't think anyone will be winning the world cup on them, but there will be many lei riders making the switch this year.
the psycho is not as balls out as the x2, but unlike the x2 90% of its performance is available to any rider. with an x2 you need to be a superb rider to get all the performance out of the kite.
i'd reccomend you be nice to your dealer, because they will be shipping in the next two weeks.