User blog comment:Kogath/Monster Hunter X Discussion/@comment-26836109-20150929015601/@comment-25516746-20150929155746

It was totally worth it for me, as I still had the old (small) 3DS. I bought my New 3DS XL after having played MH4U for some dozens of hours already on the old 3DS so the difference was noticeable. The framerate and overall graphic quality in MH4U are a lot better (it looks fine on the old 3DS, though, it's not like it's unplayable) and the C-stick helps a lot once you get used to it.

So if you have the money to spare, I say, go for it. You'll likely play MHX for hundreds of hours so why not get the best possible experience?