PsP. Reasons are UMD videos, MP3, Inernet Browser and good games like "Crisis Core", "FF1 & 2", "Guilty Gear" etcetc. The battery life is not as good as a DS but it does last me a solid day of playing so its good enough. I do like the DS but the PsP wins for me by a tiny fraction because the new DSI cannot play MP3 format sounds, not as good browser and cameras? My mobile has a much better camera with 8 Mega Pix and flash haha. Yea, PsP rules
