For sound quality, should go back to 2009, with the SR 8002. Best receiver Marantz have ever made in years, with a toroidal power core. No receiver from this brand has beated it ever since.
I do not think that there´ll be any SR8007. At least this year. They´re looking into mass production, together with Denon, and top quality does not fit there, as costs must be reduced...
I´ve been thinking about buying a SR7007 (pitty with no Audyssey XT32), as it has better quality connections compared to SR7005 and then maybe adding a 2ch Rotel toroidal power (RB1070) to its front channels...