AW Dual Strike - Better than Days of Ruin, but is it better than AW2?

Basically I own Advance Wars, Dual Strike and Days of Ruin - I prefer Dual Strike of the three as I found the "serious business" tone of the latter to be incredibly offputting. The question is, it worth picking up Advance Wars 2 if I can find a copy? Or even the Battalion Wars series?

I enjoy the series but Advance Wars 2 is quite expensive on the resell market. I just want personal thoughts on if the game is worth it though.

What are your thoughts?