Was able to try out the 12m Solo today in lightish but gusty Hood River conditions. Wind had a lot of south in it which makes the wind even more gusty than normal. I was thoroughly impressed with the kite. I switched to 2014 Envys this year (7,9,12) so that's my benchmark. I have loved the Envys. My interest in the Solo is mainly for river swell and ocean waves. Just strapless riding so no big jumps, loops, megaloops.
I had read some of the reviews so far, so was concerned about the flutter, ability to relaunch but stoked about the increased power, upwind ability, slimdown profile and the potential for wave riding and compact for travel.
Pumped up the kite, launched, and went straight upwind to the White Salmon bridge in one tack (while 13m and 14m kites were having difficulty holding position). I would not have done this on my 12m Envy. So the power is impressive. It does have flutter, but I guess this is expected with only one strut. It did not always flutter, and when it did the kite never deformed or compromised its flight. The kite turned quickly for its size. What I was most excited about was the steady pull of the kite across the window, making it much easier to stay perfectly on the face of a wave (small windchop today).
It was gusty and holey today and the Solo fit the bill for those conditions. The kite has great low end grunt. I would say that the Envy has better high end. But, then again it might just be time to get a smaller kite. I briefly took out a 9m Solo, but it was too light and not as much fun. I went back out on the 12m and had a great time.
I hope to try out the smaller sizes next in higher winds and hopefully some legit waves. I've heard the kite performs well (even better) in the small sizes but I must see for myself. So far so good for the SOLO! Very impressive kite with some real potential for wave riding!
I'm 190 lbs. I have thought about adding a 14 or 15m to my quiver for a super lightwind kite, but now I think I won't have to go any further than a 12m Solo (and will probably replace my 12m Envy).