Now I've done a hulluva research on both the Supercard Mini-SD and the M3 Slim Mini-SD and here are the pro's and con's on both:
Supercard Mini-SD
Pro's
Realtime DS game saves as if you had a real game in your DS!
Great DS game compatibility with perfect performace!
Same size as a GBA game so it sits flush with the DS Phat!
Cheapest Flashcard to buy with great durability!
Devs update the software often to add games all the time!
Con's
Ok GBA game support but the micro-sd version needs to have faster ram!
Could have a better menu system, as text is plain old.
No RTC for GBA game? Should be a given!
DS/GBA in-cart bonus system should work on more then two games!
M3 Slim Mini-SD
Pro's
Good DS game compatibility with great performace!
Ok save system but you have to reboot to finish saving.
Best GBA compatibility of any flashcart!
Updates are often but after more then like 8-10 games are released.
Media functions built-in, so no need to install them yourself!
Menu system with icons!
Con's
Price, its one of the more expensive flashcarts.
You have to reboot to finish saving?
It's too big and doesn't fit in even the DS Phat flush!?
Makes your DS look ugly when you see it sticking out.
No RTC for GBA game? Should be a given!
DS/GBA in-cart bonus system should work at all! They advertise it!
I'm not saying the Supercard is the "end-all-be-all" of the flashcart world but I choose it mainly for its DS game support and its size. Have you seen the M3 offering?! Its sticks out of even the DS Phat! I mean come on! The Supercard Mini-SD looks great in my DS Phat and you can't even tell I'm using it! Not to mention I can install the same media software on my Supercard that M3 offers and its FREE! And I love how the devs update the software all the time so that I'm always up to date!
SuperCard miniSD
M3 Slim miniSD
So to get you going you would need just this:
SuperCard miniSD bundled with the SuperKey - $72
Ritek 150X 1GB miniSD - $22
Total = $94
Less Shipping = aprox $110
Enjoy,
FifthE1ement Phatty 4 life!
FifthE1ement