Rush is one of my top ten, but I am not really one to judge, Ardius. I only know A Farewell to Kings, 2112, Permanent Waves, Moving Pictures and Signals.
For example though Signals is a very different album than Farewell. People had some very negative opinions with Signals because it introduced synthesizers in quite a significant magnitude comparing to older material. Same that happened with SIT and SSOASS. People just don't know how to accept change and that appears in all aspects of life, not just music.