My harmoney remote is also about 8 years old, screen cracked and not really all there. Still works.
My Oppo 93 does a great job but I also find myself now not using discs anymore. maybe one a month. Where I used to keep a very regemented Netflix queue going I now rarely do and down to one disc a month. We got expanded movie channels on cable as a free upgrade and many of the movies end up there.
I love the Marantz unit previouly mentioned but other than Audessy set up that unit would be duplicating most of my amenities. I recall 4 years ago starting a thread on the saloon about a stripped down proscessor concept when I got my Oppo as the likely succeesor given that blackbox add on's are more cost effective.
At this time I can justify the 975 as mostly an upgrade with very little downside. I have to paint the room and disassemble the system I am amazed how many wires are back there. 6 thick from the oppo to the 990, 5 balanced from the 990 to the 7500, 2 balanced from the 990 to the SMS-1 (sub eq), on and on.......
Basically the polution from all these cables, power supplies, Routers, wifi, eq's. Music servers, etc might be degrading the sound to some degree.
Atmos kind of intrigues me but I'd have to figure out some sort of add on to my M&K's. Not sure I really want anymore speakers in my living room.