I'm new here but I found this interesting.
The New 3DS's c-stick is a life changer when it comes to Monster Hunter and Majora's Mask 3D. I played MM3D on my friend's regular 3DS XL and was annoyed that I couldn't control the camera to my liking. You get very used to it and you can't live without it after. Lol. Even loading Smash Bros. is WAY faster. Also switching from different applications is super fast and it's a noticeable improvement. I can never and will never go back to an old 3DS XL. Also note that all games that had Circle Pad Pro compatibility like Monster Hunter 3 Ultimate, Resident Evil Revelations, and Kid Icarus Uprising to name a few, work just fine with the New 3DS XL's c-stick
When it comes to Ocarina of Time 3D though, you're screwed. The game is OoP (out of print) and is going for $70+ on eBay used. So check your local game stores like GameStop/EB games to see if you find a used copy. I found a copy for $35 at GameStop. Thankfully they haven't raised the price yet either.
Good luck on your future 3DS! The New 3DS XL is definitely recommended. 
