Yeah, I could understand why the fifth would be hard to get into because it was the transition from the "old school" Buffy to the "new school" Buffy, as I like to call it. They really started to go all out with the plotlines and such after that point in the show. In a way I didn't like it because there didn't seem to be a cap on the rules of reality of the Buffyverse. It's like anything was possible, but not necessarily in a good way. I don't really know how to explain it. :/