500mm CF Blade Recommendation

[skigolfmike]

What's worked for you guys. I found the RCP II 500mm blades and the RotorTech 515mm blades. What would be good for aerobatics and 3D.

[vicrc]

I like the RCPV2 500 on my Hurry and 425 on my Trex 500. I can only do noob 3D so its got what I need.