I've tried the 12 and 16 Rhino 2s. I can only compare them to the toro 16.
The Rhino's for sure go much much higher. Their lift is incredible.
Both sizes are stable in the air. I didn'm make them fall more than once in the day even though I'm a beginner.
They are not more difficult to relaunch (if not even easier than the Toro) when the wind is strong. On the otherhand I'm sure that they'll be much more difficult to relaunch in light wind (hi AR).
The pull is much more powerful than the Toro. I guess that the windrange is a bit smaller on the 16 rhino than on the 16 toro, but I still have to get to know the kites better.
The rhino goes upwind better. I guess it's because of the higher AR.
Finally I have to say that the Rhino scared the sh**t out of me on the first jump because I wasn't expecting to go so high. I'm not kiting as "loose" as I was with the Toro. I hope as I get to know the kite better I'll be more at ease.