Just wondering if you guys have tried this for the GBA or NDS. http://gbamovie.com/index.htm I found one off ebay last year. The unit looks like the slim M3. I couldn't do a whole lot with it, other than play low quality movies and run NES ROMs. I hope to do more with the R4.
I have that. I use it to play NES and SMS games. I have about 400 NES and around 30 SMS games, which includes some GG, on my CP card. Plus about 8 books. The only problem I have with it is that it sticks out about a mile. You could knock yourself in the chin with it by turning your GBA over. But I picked mine up very cheap, so I really should not complain. I carry it around in my pocket along with my GB micro or GB SP brite. This is the only way I play my NES and SMS game emulation. I have never tried any movies with it. I strictly use mine for emulation and reading e books.