How to choose a game flashcard for game console?

When I buy a new game console, I should be asking myself, what kind of game flashcard is good for my console and how to choose a good game flashcard for my game console?

The most important thing is you should know the game console type and console version:

---it is a new 3ds/3dsll or old 3ds/3dsll/3dsxl or 2ds? it is v4.1-4.5 or v4.1-9.2 or the latest v9.8.0-25?

---it is a 3ds games you want to play or nds games you want to play?

If you want to play 3ds games, you can choose 3ds game flashcards such as:

---Sky3ds(works on console version 9.8.0-25 with console type NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS )

---Gateway 3DS(works on console version 4.1-9.2 with console type NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS)

---R4i Gold 3DS Deluxe Edition(works on console version 4.1-4.5 with console type NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS)

---MT-Card(works on console version 4.1-4.5 with console type NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS)

And the most popular and hot selling is sky3ds and gateway 3ds.

If you want to play ds games, you can choose either the 3ds game flashcards or ds game flashcards such as:

---R4i Gold 3DS(works on console type: NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS, DSI/DSIXL, NDS/NDSL)

---Ace 3DS Plus(works on console type: NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS, DSI/DSIXL, NDS/NDSL)

---R4i-SDHC 3DS RTS(support 3DS V9.7.0-25 and NDSi V1.4.5), R4i-SDHC 3DS V5.0(support 3DS V9.5.0-23 and NDSi V1.4.5), R4i-SDHC 3DS(support 3DS V4.4.0-10 and NDSi V1.4.4), R4 i-SDHC V1.4.5(support NDSi V1.4.5), R4-SDHC(support NDSi V1.4.0)

---DSTWO(stoped production)

---M3i Zero / M3 REAL(works on console type: NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS, DSI/DSIXL, NDS/NDSL)

---EZ Flash IV(works on console type: GBA/GBASP/GBM/ND)

---Acekard 2i/Acekard 2(works on console type: NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS, DSI/DSIXL, NDS/NDSL)

---R4(0815): works on NDS/NDSL

---R4itt / R4itt 3DS RTS(works on console type: NEW3DS/3DSLL, OLD3DS/3DSLL/3DSXL, 2DS, DSI/DSIXL, NDS/NDSL)