Chris Brown

Which nintendo ds flash card should I get?

Okay, I just bought my first nintendo ds and I am planning on buying a flash cartridge.
I am looking for a flash cartridge that is:
1.below $30
2.100% compatible with most games
3.durable
4.software still supported
5.Easy to use

I have looked into some flash cards like the acekard 2 and m3 but unsure which to get. Thanks for your help guys.
If the flash cartridge isn’t 100% compatible, it should at least run the new pokemon games (heart gold and soul silver) well.