Audioque has CF cones...the cactus subs have soft parts such as carbon cones which nobody in the US other then digital designs has. nobody. T3 hasnt brought theres out yet and they do not compare to the cactus subs. cactus also uses a higher grade coil such as the ones atomic uses in there subs which are ungodly strong.
cactus also only has one line of subs out anyways. the MK2 was discontinued because he "didnt like the results" so only the MK1 is being made right now.
and the carbon composite cones they use are hand made by a gentlemen in germany IIRC. i priced them seperate and they were $400 per cone when i tried to find some for my subs.