Ok i rode the 12m HiFi today and OH MY GOD....
Since i started kiting I have ridden 2 standout kites: the 12m M80, and the 9m waroo... Ive flown countless other kites from most brands along the way and i can't really think of anything else that i liked from the first fly..
But flying that Hifi today was INSANE.... It has everything i loved about the M80 - the smoothness, the turning, that solid wake feel when you unhook and most of all, the feedback from the bar... AND ITS GOT A 5TH LINE!!!!
Combine all that with 80% of the depower from a waroo, its lightning turning and crazy jumps; and theres the HIFI

It has more bar pressure than a Havoc, (that was of course expected and a huge plus for me) Its about the same pressure as a 9m waroo and less than a 2007 Assault so you can really
feel how the kites flying rather than be forced to look for it (Which i found you had to do with the 07 Havocs)
Its certainly not prone to stalling or feeling funny when you unhook, it just feels the same as it did before so you can concentrate on whatever our doing, rather than keeping speed and keeping the kite flying...
My biggest surprise was its jumping power, especially for a 12m kite.... I hated the way the M80's boosted, LOVED the way the waroo's did... This feels very very similar to a waroo in jumping style; but its got this explosive lift-off and then gradual hangtime back down, pleeeenty of time to take the board off, flick it around and stick it back on
Everything about it just seemed smooth and flowing, very different to the Havoc's style of sheeting and turning. It was a comfortable ride, yet at the same time quite powerful and relatively fast...
In regards to the bar, I just tied the dangly 5th line thing up to itself to get it out of the way, that thing could take out an eye if its left flying around! I just hooked my leash to the little black thing like usual...
Crashing an attempted kiteloop pass was the only time i let the bar go, and the usual depower was more than enough, kite crashed, i stood up, grabbed a side line and up it came... Of course its not gonna launch like the havoc or session but its still exceptional for a C style kite...
So yeah im pretty much certain this is what im gonna be riding this summer... Get a hold of one and try it, i felt instantly at home with it :)