o.k, here's my 2 cents worth, have owned rebels since 2011, 5,7&9 2011, 6,8&10 2012, 6,8&10 2013, have also owned and or flown ozone reo, cat and edge since 2012.
Now i enjoy free-riding and going large, to keep this short and sweet,
My ability, confident.
I don't work for a shop or manufacturer, i have no family that does either, as an independant kite instructor i do have a great relationship with a shop..

2011 rebel, great allround kite, exciting boost & float, grunty,
2012, minor manufacturer changers, still a great allround kite, thought it had lost a little grunt but after riding it for a season i realised north had just smoothed the ride out,
2013, minor manufacturer changes, it cannot get any better as an allrounder imo, super smooth, improved wind range, big improvement in hangtime.
build quality, now i spend alot of time watching and looking at all brands of kites, if there is a kite out there that is made with better quality, i have'nt seen it yet but please please let me know, all brands now use countrys that allow cheap labour so its the design and material quality that becomes very important here, look at any kite after a years use then you can make an opinion,
Now, the Ozone Edge, this is a race kite i believe, even more so the 2013,
having flown it you soon realise this is an old school kite. I've only been flying since 2006 so the lack of de-power compared to "modern" kites, having to rely heavily on board edging is somewhat a strange experience, yes it go's upwind like a train, yes it generates lots of power, yes it has great hangtime.
To compare these 2 kites is'nt easy, 4 line against 5 line, turning speed........ all the normal opinions will surface, to compare them properly you need to own them both in the same size and spend lots of time on both, blah blah blah....
Now if the rebel has a build quality of 10/10, the edge has a 9/10 IMO,
Less effort to inflate the ozone,
canopy noise when sending the kite across the wind window at speed, North have just nailed the design and the kite just holds it shape second to none. IMO
In summary, the kites do similar things, both great kites but, one is a allrounder, one is a race kite, its mainly about what the riders abilty and interest in kiting is IMO. To say one goes bigger than the other, here's an idea, REDBULL big air comp in WA




And no i don't teach on rebels