Yes, aniMate+ is pretty nice. But unfortunately there is no Poser version and DAZ Studio doesnt allow keyframe editing. Even with aniMate you get only the keyframes for one actor at once instead of having them all in a table like in Poser. There is no spline section either. Thats why I personally prefer Poser. 

Tho I really wish there were some of the DAZ plugins like aniMate, Pupeteer or Powerpose...