I think you will find that with any fandom. I'm in a few and the fan opinions are always all over the map. I mean, there are episodes that are regarded as the best and characters fans like but there is no consensus, only a majority.

Now me, personally, I HATE the fifth season because it didn't feel like Angel in the slightest. They took the heart of the show and tried to replace her with Spike, Harmony, and Eve. It didn't work. I think a lot of die-hard Buffy fans like S5 because it was lighter but the hard-core Angel fans don't seem to.

At least, that has been my experience. I mean, if I had to choose to keep my Angel DVDs over my Buffy DVDs, it would be Angel. Those kind of fans (like myself) didn't care much for S5 from what I have seen.

But again, fandom is ALL over the place. :)