>>1827466In terms of what was animated, the first arc was really good, ALO was okay, GGO was okay, that almost pointless filler with Excalibur was crap, and Mother's Rosario was pretty good, if gratuitous tragedy porn.
I don't hate SAO, but nothing has been as good as the first arc, since there's basically no stakes anymore.
As for my contribution to this thread: while it's probably not my absolute favorite, Gunbuster is definitely up there.
