There is no reason to pick the xl against the 3ds. Even price seeing how you can regularly find it for 150. If battery is a concern, nyko has a replacement that doubles it, making it better for ds games too, though those can already go for a good 8.
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The King Wang.
Listen up Urinal Cake. I already have something that tells me if I'm too drunk when I pee on it: My friends. - Colbert.