Be aware I am a shop owner so my rewiew could be veiwed as biased.
I have had limited experience on these but here goes. Ninja Star kite-
Build quality is excellent, especially for the price it was much better than I expected.
The kite has a unique diagonally segmented LE which makes it rock solid and very durable. Heaps of Bumpers across the front of the kite help fend off the nasties on the beach. Reinforced leach line is good.
All of the struts are union joined like the higher end naish kites, this combined with the 7 struts makes it a very stiff kite. Too stiff actually, you cant sit your board on the back of the kite to hold it down on the beach..... The other downside to this is the kite is a little slower to turn than some other kites. Kiteloops were a bit slower and brought me in hotter on the 13m I flew than if I was on my 14m Caution I usually fly. Personally I believe they should have made the Ninja a 5 strut kite. If you wanted a faster turner go with the mid aspect 06 Hawk that is due for release in OZ soon.
The Ninja is a good performer in the sky, quite luff resistant, boosts well and relaunches well in either 4 or 5 line mode. It is a little prone to flying backwards if you oversheet in light winds though. The bar is pretty much faultless with a very nice adjustable 5th line setup.
The boards are made in Aus and are similar to Cardboards but with snazzy graphics. The Samurai is the pick for surf or choppy conditions. The Ninja is wider with square tips and offers better light wind performance and more pop. The Butterfly is the chics version of the Ninja but is suitable for anyone who is after a softer ride or is a lightweight.