It's pretty much up to you which language, both are easy even if you only know English.
As for Animal Crossing, im not a fan of the game but i heard that there are no slowdowns. With mario hoops, i played it, i got the "fixed" M3/G6 Version and i just changed the setting to read normal and it works fine!
As for Animal Crossing, im not a fan of the game but i heard that there are no slowdowns. With mario hoops, i played it, i got the "fixed" M3/G6 Version and i just changed the setting to read normal and it works fine!