XL hands down. I can't imagine going from an XL to a regular 3DS at this point. This is also the reason why my first DS was the DSi XL. Trust me, even going from a regular to an XL, you'll wonder why you ever bothered getting a regular one. Some people might disagree, but I think that once you have it physically in your hands and have experienced the extra screen space, you won't regret your decision, especially because it's less strain on your eyes. Some might not think it matters, but I do.