I just think Season 5 is something we either really enjoy or just really don't. It definitely took a different turn from the previous seasons, because it's in an entirely new enviroment. We lose Cordelia and Connor. Gunn goes from muscle-man to lawyer-boy. It's definitely a huge change.
But, like MRNewman said, I wish we could've seen it develop longer. There were so many different places the show could go from there.
Besides, I love Spike and Angel to death, and their banter is hilarious. The stuff with Illyria/Fred/Wesley, Lindsey/Spike, all the little individual character episodes we get with Lorne, Harmony, Wesley, Cordelia... they're all amazing!
I mean, honestly, my only two main complaints of this season were the fact that the end of the season is a bit rushed and Gunn's character took a turn, IMO, for the worst. Everything else, I absolutely adored and there were very little episodes I found to be even a little boring. Like, two or three - tops.