Remember kiddies favouritism is dangerous................ I think the axe kick is over rated, and acrobatic kicks are just showy in an actual match, just go in and get the job done. In my opinion flashy kicks in a sparring competition just identify weakness in the user, I don't know at this moment how to put it exactly but it does in the majority of cases imply a deficiency somewhere. If I'm pushed I like the back kick, it is the perfect ambush weapon when the opponent thinks they're in control and coming forward, then you put it anywhere that's open (and legal!! ), it has a good balance between speed and power. But as long as you're winning nobody can criticise you.....