Tusk (obviously.. it's simply their best in my opinion, has the most depth. A work of art.)
Rumours - never understood why some people let the fact that it has become so overblown affect their opinion of the actual music.. Timeless, great songs, stellar production.
Tango - *this one is tricky.. I'm thinking of my personal version of Tango, which includes all the B-sides, Joan of Arc (which I know some people argue isn't a mac demo, but to my ears, theres no question.. the production screams Lindsey) and omits a few songs that made it onto the actual album.
Say You Will - Again, I'm using my SYW playlist as the reference here. Omits a few Lindsey & Stevie songs, includes Not Make Believe.
Fleetwood Mac & Mirage are pretty much tied- both have songs I love, songs I don't care for, and both represent Lindsey at his weakest (songwriting, not production) if you ask me. That said...Rhiannon, Over My Head, Say You Love Me, I'm So Afraid & Crystal & Landslide
. Gypsy, Eyes of The World, Hold Me, Straight Back & Book of Love