Phat DS and homebrew

Hi everybody,

I´m new here and I just got a Phat DS with loopy capture card and charging mod.
I have tried to understand what has been said in this forum regarding the best flashcarts for slot 1 and slot 2 but the answers were kind of complex and confused me a bit to be honest so i will try to ask specific questions here :

1) What is the best flashcart for slot 1 for a Phat DS ? And why ? (any way to play GB/GBC and SNES as well ?)

2) What is the best flashcart for slot 2 for a Phat DS ?...

Phat DS and homebrew