What do you currently use to play CDs?
While that Olive looks good, it is very expensive indeed.
Not sure you would accomplish anything with a new receiver unless you need some features you don't already have. So, since your current receiver "trully sounds great" I don't see a need for an update. You may want to look into room acoustic improvements first.
Currently I have 2 Sony 400 disc Mega Changers. They are linked together so that when one finishes playing the other one is cued up and fades in while the other fades out so I never have a second of dead air while I'm listening which is probably the best feature I will miss if I upgrade to the Olive.
The reasons I'm looking at the olive is becuase I have roughly 3000 cd's and I only have about 1200 of them loaded in the cd players (some albums are short enough to burn 2 onto one CD-R so instead of 800 between the two I can squeeze more in). The other issue is my one Sony player is starting to screw up...won't eject discs consistently, won't read and play some of the burned discs like it use to and when it doesn't then it ignores that slot completely and won't even recognize it in the display until you open the door and re-set every time. It seems the mega cd changers are disappearing, I think the biggest Sony makes now is a 300 cd changer. So replacing it at the minimum for something equal doesn't even seem to be an option unless I make the switch to a music server or computer if I want to enjoy a "shuffle play" of the my cd collection.
With the Olive 04's capacity to hold 6,000 discs I really think it is the machine for me so I can enjoy all of my music....even though it will take me forever to get them all loaded into the Olive!
But sound is critical to me and as much as I love my old Techincs receiver, on paper anyway, the higher end Denon receivers which I'm leaning toward have some advantages over my current receiver....lower THD, I could send 125 watts to each channel vs. 100 that I'm sending now, the ability to link with Apple products such as an I-Pod (this will be the selling point I'll need to hit home with my wife to get her onboard!) etc.
I just don't know have any first hand experience to know if updating a receiver with these improvements will make a big noticeable difference and be worth it?