Chronological order, not order of personal favor, with the emphasis being on the pre-Moving Pictures era:
Caress of Steel
All the World's a Stage
A Farewell to Kings
Hemispheres
Permanent Waves
Notice what's missing, in my list, above. 2112 is considered a holy grail to many. I much prefer the truncated version of the epic, found on ATWAS, and don't particularly care for the rest of the album's tracks that much, in comparison to the rest of the band's late 70's catalog. Similarly, all of the tracks that I enjoy the most from Fly By Night are on ATWAS, and "By-Tor" in particular is a ferocious performance (despite the apparent overdubs of the "battle groans," which were done on a P-bass, in the studio recording).
Let's face it; "Moving Pictures" will always be considered the band's most definitive album; even Neil has written that it was the album that they had always been wanting to make. Sure, subsequent works have had moments that equal, or even surpass "Pictures," but not over an entire album. IMHO, "Snakes and Arrows" came the closest to being MP-like, in terms of being a consistent, hermetic piece of work.