A dyno of the AEM v2 versus the original AEM CAI is pending...
However, the power differences we're talking about here are minimal (~1 whp if they're lucky). Once the plots do come out, there can be a bit of a debate on the shape of the power curves and whatnot, but in terms of overall power gains, it's most likely not worth the extra 70 bones.
But hey, if you want to be different, go ahead and give it a shot.
Shingo