The Flysurfers are 5 and 10. The Maniac 5 was a nice friendly kite until I put WAC on it. Now it is fast and furious and in its wind range (15-20 and up) an adrenalin machine. I skied with it and the smile was so big you would think I sing in Vegas. The other is an Extacy 10. As funny as it sound, I prefer the Extacy 10 in strong wind than the 5 (after the WAC), because it does not fly as fast. The bigger size is also more inviting floaty jumps.
In terms of flight, the Extacy is the best foil I laid my hands on. When it is in the air it keeps its shape so well you would think its solid. The 5 is a close second. It also turns fast, the depower is very effective and the bar forces are great. You need force but not too much, just enough to let you know what the kite is doing and not spend extra energy.
Jumps are great with this kite, I always get the impression that it generates more pull on top than on the edge. Since it has depower, the jumps are easy and controllable. It jumps not as high as the Frenzy, but still much better control, and no tendency to collapse on the landing which happened to me a few times with the Frenezy. You can avoid it with better technique (pull the bar in before the landing) but with the Extacy you just don't care. Right, left pull bar and you are in an elevator, not getting much ground speed.
If you are into open cell the Extacy's cousin, the Rookie, is something I would love to have but don't enough cache (I need to offload some kites now).
Quality of these kites is unreal. The material is something I have never seen in any other kite. It is super thin and strong, and last pretty much forever. Those kites can be ancient and still look great. Same goes for the bar and the rest, these kites are bomb proof (#1100 center line

). I think it is something that was developed for aviation. The quality of these kites is so high that you would wonder if it matters. If they were little cheaper I would probably have another one.