Does anyone know if any of the new receivers coming out support firmware updates to fix/update the GUI's? I'm trying to decide between the Pioneer - : VSX-1019AH-K and the Sony STR-DN1000. A lot of the reviews I've read said both the GUI's lag a bit. I've yet to see it in person but this could be annoying. Are these things upgradable? I'm not use to seeing firmware upgrades for a receiver.