Advance Wars dilemma: Dual Strike or Days of Ruin?

[abroZ]

I'm planning to buy Advance Wars on the DS, but i don't know which version to get.

I like the darker look of Days of Ruin more than Dual Strike.

Dual strike on the other hand gets the better reviews.

Days of Ruin is a sequel, with good reviews,  to an already well-established franchise so it can't be bad right?

Maybe people who have played both games could help me out?

what are the pros and cons of both games compared to each other?

Thanks