It seems that most people like the ds better, but how I define hardcore is nose to the grindstone, and while the ds may have a wider variety of unique games, the psp has more games that reward those who stick it out and fight to the end: warriors orochi 2, crisis core, secret agent clank, all ps1 games, dissidia, and size matters to name a few. These games have the more substansial feel of a PS2 game as opposed to a ds's cartoonyness. The ds is for fun, the psp is for SOLDIERs.