I personally think that Bostons debut is actually one of the best albums released during the 70s. But that of course is based on the musical taste of each individual listener. If I remember correctly, Boston spent a few years in the studio producing their debut. I was shocked when I seen them in concert and they sounded absolutely outstanding live as well.
I mentioned the debut statistics only for the purpose of information concerning the band itself. Not because it was the only reason I chose that particular album as being one of the best albums during the 70s era.
There are just so many good albums that were released during the 70s that I like a lot, but I remember Bostons debut as making the biggest impression on me personally.