Lot of company(?) shouters already here. Tautologies' video post made me smile "most powerfull kite I've ever flown". Sure it is true if you have not tried anything more powerful but there is
and you are ignorant (ok, it was kite company marketing video so you can pretend to be ignorant). It is like stating for general community that Citroen 2CV is worlds fastest car ignoring Bugatti Veyron or perhaps some Koenigsegg missiles.
which one will be better for freestyle? 15 FS Dlx, spleene x19, naish draft, north dyno? maybe a Zephyr...
I have an option I like, cause with 15FS DLX I could practice freestyle, but the thing I liked is that i could also boost higt I supose, but if with 10 knots i couldnt be able to do a decent powerful unhooked stuff (always thinking about a normal twintip like a Clash), maybe i would prefer a big one with slower turning, but better pop for unhook in 9-12 knots and forget boosting... you know what I mean? May be is a little bit difficult to explain
It all depends with how many knots you can do some decent unhooked freestyle stuff... The perfect kite i need now would be one that i could do freestyle and boost in 9-12 knots, but dont know if it exist, cause i didnt tested anyone except spleene x19 :S
I don't think it is easy to put kites in order as there are so many variables from personal preferences to physical facts. Why some kite's have high boost and hang time. It is all about design parameter choices of the kite designer. With every kite you listed can probably be used for something.
But my thinking of kiting is that kiting is all about power what you have available at that moment. You need power to do things and you need depower to be able to set up things at that real time wind condition ie depower range. Turning comes after that, what you do with high turning kite if you cannot even plane with that or your riding is sineing (sine) only? You still sit on the beach or go home as if you sine the kite you don't have power for the trick.
As you realized that at 10 knots you cannot boost to skies but you can go big in regards of wind level. You cannot compare 10 knot jumps to 20 knots or even to Red Bull King of Air with 40 knots (and those still use wave kickers). I say definitely with Speed3 15DLX you can jump and do freestyle at 10 knots and it has been proven many many times by normal user videos. Again same normal user video proves that you can go big with same kite.
One question could be. What kite allows me to do my kind/style of freestyle at low wind. Can the same kite be used for big air and more powerful freestyle at higher wind levels as you seem to wish?
Many light wind kites cannot do because of limited *real* depower as you cannot hold the edge for loading or your riding is about edging hard against enormous pull and you drift downwind and struggle to maintain level. Toby is IMO remarkable holding 18m Dyno over 20 knots when my friend at local spot said that for him Dyno 18m turns already big when it is flying properly. And when it is not flying it seems to Hinderburg a lot. Local experience with Dyno 16m was that when winds increased it started dragging downwind as well, so people bought Speed3s.
I like to watch end-user videos to see what *ordinary* people can do with the gear. Do not try to judge the wind if it is 7, 9 or 15 knots. For some reason person on video is using that gear (that gear you are interested in because you searched for it) and he probably has other kites & boards as well. But he chose that one based on conditions and quiver to be optimum for *his* style at particular point of time when he observed weather at the beach.
X-19 non-pro hobbyist freestyle: https://vimeo.com/24040516
Speed3 15DLX (probably): http://www.youtube.com/watch?v=O6R3PWcxOBo
Speed3 21DLX: https://vimeo.com/44165024
I know that X-19 rider on above video has Spleene 12m LEI so probably wind at the video was too low for that. But why I cannot easily find similar videos of other kites considered to be low wind kites starting at about 8 knot? Like if Epic Infinity is sold by thoouusands (image given by DM at KF) where are the happy user videos doing some tricks and big air? Some low wind kites even still struggle relaunching at 8 knots and if you practice freestyle/unhooked starting from 8 knots you probably need the relaunching capabilities on second priority to power requirement.
Trying to find "your optimum kite" is hard in today's marketing jungle. You always go blind folded to some choice according to advise given by ignorants (including me as I've my view and I've not tried everything).
That is why I said you should short list the kite for closer inspection (go for a demo if possible) as nice overall kite.