Quick review since I got to try the kite today

2011 8m Catalyst 2nd hand in well used condition. 20m lines. 74kg rider, relatively new.
First session - 2.5 hours, 25 knots average gusting to 30 but well powered.
I got used to it pretty much immediately and I found it to be very responsive and easy to fly. Felt more responsive than my 2010 10m C4 with 25m lines.
Had no problem handling 30 knot gusts, just went up wind at a steep angle. Responded very well to depowering, didn't feel too sluggish even when nearly fully depowered. Loved it. Towards the end it gusted to around 35 knots and I wasn't too petrified, although walking back in proved to be a bit of a challenge especially because my legs were giving way.
Second session - 40 min, 13(?)-35 knots, horribly gusty. In the lulls I had trouble planing/holding ground and was no fun so I came in. To be fair, very few, if any, kite can really handle that kind of crap wind.

In short, I like it! Together with the C4 my sweet spot is now 15-30 knots!