Best sounding and reliable CD changer?

This may be too budget for you but from direct experience I can vouch for this Sony player.

Sony SCD-CE595 5-Disc CD/Super Audio CD Player

I used this CD/SACD player to break-in all sorts of cables and equipment. I would put in 5 different break-in or test CDs and have it play for days/weeks on end. It never had any problems.

When I wasn't using it as a break-in tool and just listened to music is was very nice. No harsh treble and a bit laid back overall.

I've read the Adcom multi-disc changers from yesteryear were also very good. I don't know of any current multi-disc changers though.

I run three Sony 355 units, each with 300 discs. They are chained together. All have optical output. All were purchased as refub's directly from Sony. Running them for almost four years now and no problems. I also have a Sony 595, five disc unit, which I use for SACD's. That also has been highly reliable, going on seven years now. The sound? Almost as good as my Sony 777, which I use in my main system. The changers are used in my office system. Even given I am an IT professional, it never made any sense to me to put my media on a computer, too time consuming, not a meaningful difference in sound quality. I do rip music to my mobile player.

My name is mentioned??
Yes i currently have two SonySACD/CD changers,another SonyES changer, Then four of one brand I like, plus another on the way since just last night.
I buy used top of the line brands. Cheap. usually i will not spend over $75 shipped.
Note I am not mentioning my favorite 'other' brand besides Sony.., as i am still buying them. Why have competition?
I figure having a pile of the same ones will pay off as they die off.. Spare parts for the rest.

The main thing is find five disc changers which cost over $700 new in their day. Now typically under $50. Same ones some fools are asking $100 or $200. Crazy. Just sit and watch ebay. the cheap ones will show up. (and are just as good)
I find changers last just about forever. With a nice DAC they ROCK!.
Sorry i will not mention my current fav changer.

Take a look around for a used Adcon GCD-700, wonderful sounding and appears to be built well. The carousel can be a little noisy when rotating though.

The Onkyo C390 is also a good suggestion and of course the equivalent Integra model.

Bill

not sure there are many (any) being made any longer so PARTS may be an issue for any of these machines should you need service.

the HIGHEST END unit I ever saw was the Nakamichi Dragon changer ... BEAUTIFUL but doubt they are supported any longer and you may end up with an expensive boat anchor