In regards to the 2015/2016 tube kites, I have tried all those kites you mentioned except the Contra and the Fly. I have also demo'd the 17.5 Solo, F-one 17m, 15m Turbine, Zephr, RRD (? Black/white zebra stripes).I also have a buddy that's affiliated with Naish who wasn't to impressed with the Fly. In fact, he uses the 14m Pivot with a high volume surfboard for his light wind combo and he weighs over 200lbs.
I prefer the Fat Lady.
: Although the low-end is good, it's not the ultimate light wind kite to get you out in the lightest wind possible. That would be the Liquid Force 17.5 Solo. Maybe a 1-2 mph less low end than the Solo. Sits a little deeper in the window than the higher aspect kites. Not a con for me but may be for others(beginners, racers)
1. Fastest turning of the bunch
2. Most fun to fly
3. Best match for my boards/conditions
(San Diego Coast/11-17 mph/Sweet Potato and Vanguard)
4. Excellent wind Range(some of those kites you mention can become a handful when the wind picks up.) I usually jump on my 12m Neo when the wind hits 15mph>, however, can still fly comfortable with the Fat Lady into the high teens.
5. Drifts the best(least likely to Hindenburg when you fly towards the kite). A big plus if you like playing around in waves, especially when it's big.
I also imagine that the Cloud would be a great kite due to it's light weight, or least that what I hear. A friend of mine loves his. However, he did say the 17m didn't have the best high end so he's selling it. Mainly because he's lighter weight and does pretty well on his 12m Cloud and high volume surfboard. I'm am also interested to try the new North Juice and hopefully get a chance soon. Hope this helps and nothing beats try before you buy. What makes a good light wind for some, may not be for others.