Funny that you say Dare2fly has the best customer service. It's the only school on kitebeach that doesnt have a rescue boat for there students.
Having that said, I dont think there are really bad schools on Kitebeach, after all they all have IKO instructors.
But pure on the deal, nobody beats The Kitelounge on the financial part. The package with the free supervision for the rest of your holiday is the best deal on the beach.
Also with gear sales they are cheap. I bought a new board for $ 400 including straps, the cheapest I could get anywere else on Kitebeach was $ 400 for a second hand board.