My personal ratings of Rush discography, from fave to least fave
Hemispheres
Signals
Permanent Waves
2112
Caress of Steel
Moving Pictures
A Farewell To Kings
Grace Under Pressure
Fly By Night
Power Windows
Test For Echo
Rush
Counterparts
Snakes and Arrows
Hold Your Fire
Roll The Bones
Presto
Vapor Trails
I think that's all of them, except for the EP Feedbacks, which I don't own.