Hi Eppo,
It's been a while and thanks for the vote of confidence, much appreciated.
OK, I have flown all of these kites and can offer an informed objective opinion. Firstly, the things that group all of these kites together is they all boost HUGE, they are all fairly grunty, however, in saying that, their grunt is all very different, and they are all what I refer to as "Premium" brands. A premium brand is one that uses the best available technology and materials and has an unhealthy obsessive attention to quality and detail of finish. Thats about where the similarity ends.
The North Rebel - was our biggest selling kite last year and for good reason, it was amazing for what it was made for (waves and freeride). The D2 cloth made a big and noticeable difference to the performance across it's entire wind range with a similar feel to the kite regardless of over or under powered. The turning is very direct and very quick and the power is mad. The Rebel is touted as a wave and freeride kite and to that end I reckon it pretty much nails it although I reckon it freerides better than it wave rides IMHO.
The Rebel when compared to say, an Ozone Reo for instance, is not as good in the waves, but that's like comparing a a Hummer to a Subaro Forrester, they are built for different needs.
Rebel boosts and has quick, on demand power and responsiveness but no power in loops or turns as it is very hybrid in design and pivots in tight turns. It's a bloody fantastic kite and was duly reflected in the numbers we sold.
The Fuse - came onto the scene quite late in the season as it is usually mid season released. The Fuse being 4 line with a small bridle and pulleys has a less direct feel in steering to the Rebel but turns equally fast. The power from the Fuse is a little more than the Rebel and again is really "on demand". Pull in the bar and there's ample power to do what you need to do. I think the wind range is smaller on the Fuse than on the Rebel comparing 10m's the Reb 15-30 and the Fuse 14-26.
The Fuse is also a boost and wave style kite but I find it can be a little stally (is that a word?) when deep in the wind window in lighter winds when going down the line. It is easy to sheet out and get it going again and so you make compensations as you ride.
I think the Fuse will boost bigger than the Rebel (but not by much) if you can hold it down but Rebel is easier to manage when over powered and is easier to boost big. I think the Fuse would have sold almost as well as Rebel if it were released at the same time. Most noticeable feature is the bottom end power, it's just massive and put to good use, you can use it to get you out of sticky situations. Both Fuse and Rebel go upwind really well.
Ozone Edge - I am a little biased here because I love big air and appreciate a fine kite. The Edge is also quite grunty but doesn't have the "on demand" style power of the Fuse or Rebel. It's power is subtle until you let it build up a bit of pace, then the power doesn't so much as smack you in the head as it just kinda comes on like a performance turbo in a car. The faster you go, the more power it developes. I like this because it allows me to ride slowly keeping the power under control when I ride overpowered until I see a nice little ramp, then I let go the brakes, speed up and send it. Oh, the launch is awesome, so smooth and fast and the hangtime and height is really quite absurd. I mean man wasn't meant to fly but I do question that when flying the Edge at times.
You feel the paraglider/hang glider design built into the Edge as the designer, Robbie Whittal came from there in his past. It's undeniable and no other kite feels quite like it. The Edge is the most refined and perfect wing (I use that term purposely) I have ever flown. Having gushed on about it's flight characteristics, it is not without its short comings.
The Edge is not a wave kite, it's power cannot be shut off simply by sheeting out on the bar as is needed in a wave kite like the Rebel and Fuse. It turns fast but not as instantly as the Fuse or Rebel, once it goes, it is really fast and can surprise you when overpowered, but again, not a wave kite. There are better kites for this. It's just beautiful to fly, cranks upwind like mad and the power is strong, but only if you let it have it's way.
Relaunch on all three kites is simple and I like all three but for my needs, it's the Edge, for yours, sounds to me like a Rebel.

I hope this goes some way towards answering your questions.
Cheers mate,
DM