I voted a three. Simply for the fact that the show was awesome, and now they seem to be doing either of two things. 1. Not trying to write fantastic pieces of entertainement. 2. Trying too hard to write fantastic pieces of entertainment.
As for favorite seasons, I choose 2 and 4. Season 1 was new and they were trying to seperate themselves from the orginal, and it seemed, forced. Season 2 had awesome cases, and the writing was hilarious. I liked season 3, but they just seemed to rush us with Ryan. Season 4, though not perfect, they could have left the eric/natalia and horatio/mairsol at the door, it was still fantastic. I still loved how they coul pull me into storylines, wanting to know more about the characters.
Season 5, I loved the beginnging. The writing was light hearted and funny, and sarcastic and reminisent of good things of the past. Then, they just...changed. I don't know how to explain it, but the storylines, while awesome ideas, just didn't have a good follow through on the writers front. If they would have continued with how the beginning of season 5 was going, I would have given a rating of 4.