I agree that "Aja" has reached cliche status as a demo song. After I obtained either Japanese imports (SHM's) or hybrid SACD's of Steely Dan's first 7 albums ("Can't Buy a Thrill ' - "Gaucho"), I decided to come up with a playlist of the 20 most "sonically interesting" Steely Dan songs. The only rule was "Aja" is excluded. I won't bore anyone with the whole list; but, I've listed one track from each of those albums that made my list:
1) Change of The Guard; 2) Razor Boy; 3) Night By Night; 4) Daddy Don't Live in That New York City No More 5) Sign in Stranger 6) Home at Last 7) Babylon Sisters.
It was a fun and interesting challenge for me; and, I'd recommend any serious Steely Dan fan to give it a shot.