Is flytrex same as iosd? What are the advantages of having either or if not both? Currently i have iOSD. Does the 3g signal effect the compass?? I understand that some flytrex models you can get 3G tracking. This would be ideal if I lost my phantom. I was thinking of ripping that iOSd out and just having flytrex. Does anybody know if it takes much power consumption also would it be compatible with my datalink 2.4ghz.