The games make a big difference in the portables too.  Both portables ahve soon to come good games.  The DS has mario metroid, advance wars, dawn of sorrow games. the PSP notable and fun games are SOCOM, Burnout, Wipeout, Twisted metal, and the soon coming FF7 advent children, or the Crisis core FF7, x-men legends, and kindom of paradise, legend of heroes.  The SOCOM my dad can also play. The games for the DS have a higher rating than the PSP.  the DS has two 9.2s and three 9.1s.  While the PSP only has two lousy 9.0s.  For the games i think that the DS is more worthwhile. Or if you don't believe me see my next blog post