For Kanto starters, I'll pick Bulbasaur. I already have a Charmander before beating the Elite Four thanks to the GTS and I plan on obtaining a brand new Squirtle from there too. That would easily leave me down to the only choice. As for the Hoenn starters, I probably would pick Mudkip so I can breed some Swamperts for competitive play. I doubt I will be able to use the GTS again since I have yet to see an in-game trainer use one of them or their evolutions