Portability (size / weight)
Lets face it we're all kids at heart and the games appeal to that inner child. sometimes silly, often times engaging but always amusing games make the NDS a great purchase. With easy to find flashcarts that allow one to download roms to play and huge micro sd cards that allow for a huge library of games to travel with you anywhere, the NDS is the king of casual gaming. Pop it on when you have a spare minute and turn it off without worrying too much about where you left off. Great device. The comparison between PSP and NDS is an unfair one at heart - they're two very different approaches the target very different demographics. I spend time on both devices but I feel more of a connection with my NDS - which is only surpassed by my fondness for the Dsi.