the disadvantage of hoverfly is the price.

its very good aid for flying.

2 days ago i flew my aerohawk outside, it was 2 and half meters in the air when suddenly wind came,
it crashed on the ground almost nothing happend, only the paddles and the skids broke.

the hoverfly is the same like the aerohawk , no matter where i stuck it (cause its only inside)
it never brakes

so if one can afford to buy hoverfly he should buy it as it is great, real great pure fun.