if you are a school dont you want to teach whatever kites you sell? You dont want to teach kids on a kite you dont stock.
Yep we are a school and shop, we do sell kites that we use but we only sell them because we use them, the school comes first when choosing the most suitable product. That is why we have tested everything on the market to find the best kites out there, for learning and easy re-launch there is nothing better than the Airush DNA/ Lithium. We also stock many other brands and also use them in the school but for the question that has been asked about easy re-launch, the Lithium is the winner.
But as has been stated by many others, all delta kites pop up off the water easily but some are just not as stable at the edge of the wind when bringing it all the way round and stall more easily.