This is certainly one of Rush's greatest albums and the band is unquestionably one of only a select few who have been able to write so consistently well over such a long career.
I differ from some of the reviewers in their comments regarding the second half of the album, i.e. the songs not part of the 2112 suite. I actually prefer these to some of the sections from the first side, in particular, Twilight Zone, Lessons and Tears. Listening to these three songs in a row has remained a pleasure for the best part of 20 years. The musicianship, arrangements and general song-writing abilities on show here are simply breathtaking.
As for the Amazon review, this is borderline disrespectful. The Amazon writer should remember just how many tens of millions of records Rush have sold over their 30-year reign at the top of prog/intelligent rock & metal. You don't have to be the most photogenic or 'cool' band to succeed, thank god.
If you are a Rush fan you will of course already own this album. If you are new to the band, this is a must. Anyone who can play an instrument or write a song to a decent level will appreciate this even if you don't consider yourself a rock fan. Most highly recommended!