Ok, I'll toss a couple in here.
One recording that blew my mind was Ryan Adams - Live in Germany. I found it in the "official free flac file music sharing thread". And it's free! Here are the links:
16 bit: https://archive.org/details/ryanadams2006-10-17.sbd.flac16
24 bit: https://archive.org/details/ryanadams2006-10-17.sbd.flac24
The thread title states "of all time" and with that I feel as though I should be posting old albums from Pink Floyd and Dire Straits, but recently I would have to say there are a lot of new alums out there that have been recorded very well. Recently (even though I usually avoid this artist) I have been listening to:
Justin Timberlake - The 20/20 Experience (Deluxe 2CD Version). It sounds pretty darn good to me.
Another album that sounds amazing is:
Camo & Krooked - Zeitgeist The FLAC version is available over at Boomkat.