Hi Nick,
I don't know about KP, but when I bought my trainer kite it was a Slingshot B2 (2m) which I payed $200.00 for from my local shop.
They offered to buy it back off me at anytime for $150.00......that's how popular they are.
5 years later I still have it,,,,,I guarantee u will be fighting ur daughter for it, they are a bag load of fun!
I would go the Ozone, and if u want to get a little more serious have a look at the Ozone Uno.
Try not to get hooked