Would I go for the upgrade? Good question. It depends a lot on the price and what others say about the sound of the upgrade as I'm unlikely to hear these myself without owning them. I dread the idea of packing up my 5As and shipping them to California but I know it's been done by plenty for the 5 to 5A upgrade. Also, if the upgrade costs $15,000 or more and I could sell my 5As for $10,000-$12,000 it's getting close to the point where maybe spending the extra on the 7s is worth it for the carbon fiber cabinets and resale potential. For now, I'm just trying to remember that the 5A is still an awfully good speaker.