It’s hard to find a receiver with more than six or seven inputs. As far as video goes you’re not going to find anything that will support three monitors in HD except for flagship products like the Denon AVRX 7200 (you’re looking for something with Zone 2 and Zone three outputs). Depending on the video switching capability you need, you may need to look to professional video procession products for maximum flexibility.
Regards,
Wayne A. Pflughaupt