the best, cost-no-object, music streamer?

I am currently using McIntosh MCD500 as source. I love it so much that my CD collection is piling up. Now i find it more hassle to find CD, play it, and return it to cabinet blah blah blah.

I think one solution to this is to find a (very) good music streamer connected to a HDD or whatever.

Can any of you share what is the best, cost-no-object, music streamer? And why do you like them?

Am no techie, but seems ability to play 24/192, FLAC, apple app compatibility is a must.

Thanks for looking.