We have many foilers using the Utra here, and these kites are pretty impressive. I have not tried one yet... from what I have seen and experienced
- Aluula will not necessarily have a significant advantage over a light 1 strut/no strut kite like the Ultra for its ability to stay in the air
- Also I'm not expecting any strong impact on "power per sqm". The Aluula kite I flew was a 10m and it had the power of a 10m...
so this is pretty consistent with what you have observed.
To me the big benefit was on how "fun" and safe it was to fly in light wind: super solid and stable even in gusty shifty wind, light bar pressure, huge drift, extremely fast turning, great relaunch... but again these are impressions from almost 10 months ago
I hope I won't be disappointed!
Is it worth the extra $$$? good question...