Just checking back in.
After a few weeks with the AD2000 and the AD900x it is safe to say the ad900x will be finding a new home soon. The difference is not huge but I like the AD2000 more. I guess it's not that suprising.... In the end I found the ad2k to have a more emotional less dry feel. The ad900x just felt too polite(less intimate) and not as lush. If I wanted balanced and neutralish i would keep the ad900x but that is what my paradox are for.
I will be making a FS thread tonight but if anyone here wants first dibs on my ad900x PM me.