You have three choices for carts that have proper support/updates.[*]
The original R4.
NOT "R4-III Upgrade", NOT "R4-SDHC", NOT "R4i", NOT "R4 Gold", NOT "R4 Red", NOT "R4 King"...
NOT ANYTHING ELSE WITH "R4" IN THE NAME! JUST "R4 Revolution".
- Price: $6 from shoptemp.com
- Advantages: Can use Wood R4, giving it compatibility with modern games.
- Disadvantages: No DSi support, limited to memory cards 2GB and lower, no special features.
- Rank: The cheap card for somebody that just wants to play some games on a DS/Lite.
[*]
Acekard 2i
- Price: $15 from shoptemp.com
- Advantages: Can use AKAIO, giving it compatibility with modern games. Can update itself and cheats over wifi, supports the DSi/XL, and supports memory cards up to 32GB.
- Disadvantages: Can't do any of the special stuff the DSTwo can.
- Rank: Mid-range card for people that want to play lots of games on a DSi/XL with some extra features.
Will Acekard 2i work with ds lite?[*]
Supercard DSTwo
- Price: $35 from shoptemp.com
- Advantages: Supports the DSi/XL, can update itself even if the DSi won't run it, supports memory cards up to 32GB, real-time save (save states), in-game guide (show text and images from walkthroughs without having to reset the game), "free cheat" which lets you modify memory while the game is running, GBA and SNES emulator, slow motion, and more.
- Disadvantages: The most expensive card.
- Rank: Pretty much the ultimate card right now.