http://www.tinydeal.com/fire-linker-wit -2901.html
I love mine, and I thought it was too good to be true. Not much memory to hold gba games, but it's a way to get lsdj on a Ds or gameboy micro with goomba gbc emulator. I have 20 or so NES roms loaded to the cart aswell as 20 gameboy games, and saving works quite well. The only problem is you need to download a different software as the one that comes with it is virus ridden and in another language. The tool "sp link" is a well designed simple interface.
Some pros are:
Great price
Fits flush with GBA (doesn't stick out)
Multiple rom support
Saving for multiple roms
Some cons:
Needs parallel port PC
Needs other software
Not a huge amount of memory
Ask me any questions about it and I will try to answer.
Last edited by 12ianma (Jul 6, 2011 7:00 am)