I had an amazing Onkyo for years. I spent about $300 on it. Out of nowhere, it failed, and I was really depressed about it. I'd had several receivers before it, they were all Sony. I lost/misplaced them in moves, etc before they ever failed on me.
I've also got an RCA Surround Sound system. At the end of the day, you should get a good reliable brand of Receiver (Sony is fine, Yamaha is quite good) and just get whatever features you are looking for.
PERSONALLY, I feel like receivers are on their way out. The functionality is falling further and further into a niche reserved almost exclusively for just absolute audiophiles, and people wanting to spend money on expiring technologies. (They are also a waste of electricity compared to similar technology).
I get your angle, though. You've got the speakers, and you've got a cool setup, you just want to replace a single core unit, and have everything the same as it once was.
What brand of television do you have? Sometimes, it can be nicer to grab the same brand (or one with programmable codes specifically for your TV) so you can control it all with the same remote.
For a few years, I was buying Rebuilt RCA stuff (Not a brag, just a statement) from work, so I replaced my Onkyo that went bad with a marked down RCA Surround Sound receiver and its lasted over 12 years. I spent $99 on it, and because I already had the TV, the remotes worked together quite efficiently. It reduced the headache I had with constantly losing the ONkyo remote and wanting to adjust settings from the couch.
As far as what technology I would do in moving forward? -- The new soundbars that are coming out from the television manufacturers to go alongside their televisions are inexpensive and quite impressive. They also tend to have Bluetooth capabilities, which makes DJing from your phone or tablet much less of a headache than going through your CD Carousel. Your mileage may vary. Just a suggestion.