If you are interested in custom firmware, there are homebrew apps that either are better with the n3ds or outright require it. I don’t know which Moonlight is but you can stream your PC right to the 3DS which I find wholly awesome. I made the upgrade from regular to “New” back in the day and haven’t regretted it a minute but if you’re on a budget or just playing it the way it was meant to be played you may be better off with the OG