I kind of see Rush's run from the debut through Presto to be unmatched. Every record is filled with strong material, and for the most part, does not include much if anything I dislike.
From a Rating standpoint, every record is between 4 and 5-stars.
There's really only 2 other bands I find that have had that kind of an extensive run of consistency for me.
-Led Zeppelin: Led Zeppelin I through In through the Out Door, aka their whole catalog minus Coda
-Renaissance: Prologue through A Song for All Seasons
why it's incredibly difficult for me to rank those catalogs.
Like Rush, I see Zeppelin and Renaissance having incredibly consistent and even catalogs. The difference between their worst record and their best record is not all that much.
Why if you take 2112 through Moving Pictures doesn't mean much to me because you could take Caress of Steel through Hemispheres or A Farewell to Kings through Signals, or Permanent Waves through Grace Under Pressure, and they are all so close, it's really just splitting hairs for me.