Which R4i 3DS flashcarts is best for my 3DS console?

[aimimi]

I just get a V7.10 3DS, and want to buy a r4i flashcard to run free games.
In my old NDSL, use a R4DS, cheap and great.
Now, i want to get a R4i card for new 3ds, just check the store which i purchased before:
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But there are too many kinds of r4i 3Ds card, i don't know which one is the best.

[PirateShark]

if money isn't an issue, the SuperCard DS Two is probably a better choice.