I don't consider Eternatus as good as I used to, but I still feel a lot of people are sleeping on it.  Defensive might be falling off, but I'm still a believer in defensive Life Orb, and Choice Specs is genuinely great.  Eternatus is also, in my opinion, close to mandatory on hyper offense.  Wallbreaker is also great.  Eternatus is incredibly splashable, and way more appealing than people give it credit for.