Which custom rom should i pick for my oneplus2

Hello Guys,
I am using One Plus 2 for a while now and I am very happy with it.
My only problem is the runtime of my Battery also if I am only using less Apps and dont play any Games.
At the moment ive installed the Official CM 13 Rom.
Now I wanted to know whats the best custom Rom for me?

I am not a Android Gamer anymore.
The only thing I use are Social Media Stuff and Messengers like WhatsApp & Telegram.
My most used Apps are:

Youtube
Fenix (Twitter)
MyAnimeList
Streaming Apps
Notice Apps
Mail
Snapchat
Spotify & Soundcloud

Games aren't necessary for me cause I use my 3DS instead.

What do you think guys?
Would be nice to know some opinions.

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