I switch between a few systems I’ve modded. I love Pokémon Red, Gold and Crystal on my GBC with IPS screen and it’s fun seeing my 5 year old enjoying it so much. The Slate GBA SP is amazing, and with an Everdrive cart I have so many great games including the NES library. I have a New 2ds LL that’s been region changed and modded with the HShop. If I could only have one system, it would be this. It can play everything my other systems can. I still enjoy switching though.