Actually with a R4 cart you can have full WIFI use for the internet and what not, you can also play MP3 Video files and MP3 audio files and MP4 WAV and other video file formats. You can also look at your photo library and check RSS feeds. And this is all with one little R4 cartridge that is like 39.99 and a 7.99 micro SD memory stick. And you can also just put the DS games onto your R4 cart by pirating them, so really for about 40.00 $ you get every single game ever made for the DS. And you can also run emulators up to the sega genesis, but no farther.Q:What do you like about the DS?
A: Two screens One with touch
Q: What do you not like about the DS?
A:Lack of graphics, dont play MP3 or MP4s
Q: What do you like about the PSP?
A: Everything...Wifi , MP3, MP4, photos, lots of games, graphics