Update: I'm getting a 3DS XL. GameStop still has one Year of Luigi 30th Anniversary Edition left, reserved it for tomorrow. If there's no extremely good deal on a 3DS XL elsewhere, that's the one I'm getting.
I'll have to rethink the Circle Pad Pro, though. If what you guys say is true and it's really just MH and a few other games, it may not be worth it. I'm seriously considering the Hori version because of this: it's specifically designed for MH. Waiting for reviews first, though.