Well, I have heard this opinion before. Personally, I don't get it totally but I will admitt that it was a very good season. I just hate it when people say that the first three years were the BEST three years of Buffy just because they can't deal with change. Season Three had some really good arcs, episodes and characters. Doppelgangland, Gingerbread, The Wish, Lover's Walk, Enemies, Band Candy etc are all amazing episodes and Faith is in the season and in my opinion she's a better villain than The Mayor or The Master. But her relationship with the Mayor was amazing and she's a great character.
I'm not loving the Angel stuff in this season. This is my least favourite Bangel season because I don't MIND them all the time--but they were so boring in this season that it was ridiculous. I mean, he was dead. I'm not saying he should have stayed dead but could they be more interesting. Ah well, I can't do anything about it.
OVerall it was a great season but I still like Season Six, Season Two, Season Five etc more.