Having just upgraded my Yamaha RXA-860 I can say there is a huge difference to the newer Yamaha units. Picked up an RX-A1080 demo unit and i'm SHOCKED how much better it sounds. it's night and day.

And btw, Axiom's M3's will demolish those the Revel M16, the M5's are not a fare comparison. You need a new receiver though, no matter what you go with.

Lots of speakers from many
manufactures...mostly Axiom