Hi guys,
Both kites are very different. Dos may have slightly better bottom end than the Rebel. Both turn very fast but Dos does it with less effort. Rebel has better boost and hangtime.
Dos has very little "feel" to it whereas the Rebel has very positive bar feedback.
Personally I prefer the Rebel as the Dos steering is too sensitive. The slightest of input gets the Dos turning which is annoying if you want to just park and ride and at the top of a jump when you want the kite to park with full power, I found the Dos "wanders" due to minute changes in bar pressure and tended to leave me wondering where it was in jumps.
The Dos steering sensitivity may be an advantage if you want to work the kite or fly it around rapidly. I also found the Dos tended to want to fall in the water and needed constant upper wingtip bar pressure to prevent it falling into the water when riding with the kite low in the window whereas the Rebel tends to remain "put" to a greater extent regardless of height in the window.
The Rebel is better build quality for sure. Both are similar in price, both have similar re-sale although I'd say North carries the better brand awareness when reselling.
The Rebel flies better upwind, both are very stable.
You should ride both to see if each suits your style of riding. You can get used to any kite with time, but you shouldn't need to when you find the kite that suits your style.
Good winds,