Haven't heard Caress of Steel, but I don't think that it can be better than Hemispheres.
Caress Of Steel has those two boring epics.
Fountain of Lamneth is great, you just have to be in a more chill mood for it. I love Bacchus Plateau, Panacea, No One at the Bridge... But they're slower tempo songs. They're great songs, nonetheless. I admit I reach for them less often, but that doesn't mean they're not good. Give them another listen and tell me you don't appreciate them for what they are.
2112. A Farewell to Kings might have won, but I've only had it for a few weeks, so I don't know if I can really form a proper opinion on it yet.
I really like Alex Lifeson's guitar tone of A Farewell to Kings.
I actually like Geddy's bass tone on AFTK, my favorite of all their albums.
Funny, I end up defending All the other albums, when I voted for Hemispheres.