agreed, not only is it the best technical work, every panel is like a stand alone artwork but his ability at facial expressions are so captivating, I have a sketchbook of his too which is worth it if you are into illustration:
http://www.amazon.com/Frezzato-Sketchbook-Maser-Massimo/dp/1882931777
this is a pricey, I got mine for around $20 at NYC comic con at the heavy metal booth.