Use?: DS + GBA.
Price Range?: Doesn't matter.
Slot 1/2?: Slot 1 for DS, Slot 2 for GBA.
Built in or expandable memory?: Micro SDHC.
GBA compatibility?: Yes, please.
Special features?: I want a M3 flashcard but i am still unsure which one i should get. A M3i Zero or the "older" M3DS REAL? I am...