If you are interested in hacking it, definitely a 3DS. It's simple to do in any model and it has a ton of homebrew software. It's doable in the switch but you'd

If you are interested in hacking it, definitely a 3DS. It's simple to do in any model and it has a ton of homebrew software. It's doable in the switch but you'd want a unit manufactured before circa Jun 2018 for now, the process is more convoluted and less popular.