I personally enjoy ZG more, but we have pretty much seen all the loot from there, and AQ is probably the best one for us to benifit from.  I could use a few drops from both, but the challenge of AQ is a little more stimulating than ZG.  I think we could probably 15 man if not less ZG now on the snake, raptor, bat, and pretty much have the rest nailed down.  When we kill Hakar with no deaths, it might be a signal for us to up the challenge.  granted it did take us many tries to get it done, but I feel confident that we will only get better at it and it will continue to simply be a matter of mechanics.  

So I guess what i am rambling on about is, we should do AQ.