Bangel would be my best guess. I agree with you that season 6 and 7, as painful as parts of them may be, were still good television. People grow up, terrible things happen to them, they may not respond well to everything, and they may form relationships that didn't seem possible earlier in the seasons, and they may also learn to rely on those relationships as they mature and learn to appreciate different qualities in friends.

Also - season 4 Angel *shudders*