That's a tough question. All the options in the table are valid too.

I would say somewhere between Season 10 and 11. That would put us into Chin Ho's death. Those last 2 seasons were hard to take. Not that there weren't a few good episodes in there, but they were sparse to say the least.

I also believe William Smith got the short end of the stick in more ways than one. If they had some forethought and brought him in during Season 11, he might have been a bit more accepted by the fans. Just my 2 cents.