Having picked this up immediately upon its release from Mighty Ape, I have to say that SB once again delivers with a solid anime series.
(My only issue with this being the gratuitous Western pop culture references scattered all over the place, but perhaps it's better than the gratuitous Engrish in the Japanese dub.)
Watching S2 will easily remind you of why you fell in love with these characters in the first place, and it's definitely worth every minute of the five hours you'll spend drooling over it.