What are the strengths and weaknesses of Season 3?

For me personally, season 3 ranks up there with the first and second season. I love the dynamic of Miguel and Dexter, the bromance that is destined to fail. It is probably my most rewatched season and I wondered what others thought of it? Sometimes it seems people rank it among the weaker seasons and I was curious what the reasoning was, it certainly drags at a point or two, and the skinner is a bit under developed as a side-antagonist. But besides that I don't have any critique.