Anyone upgrade from Anthem AVM60 or MRX x20 to the new generation AVM70/MRX x40

Considering upgrading from my MRX720 to one of the new Anthems, either the AVM70 or MRX740.

I like the look of the new models and the WebUI is a nice feature. What I'm not so sure of is if there is an improvement in sound quality or surround sound processing (eg imaging, object placement, etc.) I've seen mixed feedback on some of the forums, both positive and neutral.

Anyone make this upgrade? If so, your thoughts would be appreciated.