yay we have the same 3DS :p
though im probably going to sell mine if i can find a way to save the downloads and transfer them over when i buy majora's mask edition 3DS or i'll buy the MM one (there probably will be one) get my games and downloads transferred over and sell the old one or give it to my sister
Why bother spending extra money when you could just use the one you have right now? It completely suffices, I'll save my bux for the NEW 3DS or whatever else Nintendo has in store. Maybe even a Wii U :)
(also you can do a system transfer if you buy the 3DS first, or you could just call support [make sure you have both serial numbers and can name a few of your games/downloads off the spot] and they can link them up for ya, that's what happened with me!)