Best DS Backup Unit?

What's the best DS Backup Unit for playing DS, GBA, SNES, NES, etc. roms on your DS? Also play music and movies?

I see that there are many backup units and are unsure of what to choose.

This belongs in NDS Brew you know?

The forums over there are dead.....

To answer your question: The one with the most memory.

[ace]

The forums over there are dead.....

They can't be dead because they haven't been released yet.