Household no doubt, psp sucks after a while i have it, nintendo ds will get old, trust me. Get 360 some great games coming out like Modern Warfare 2, itll be sick. There are endless games for household, handhelds are only good for trips.
Fallout 3, Gears of War 2, Call of Duty Modern Warfare/World at War, NBA 2k9, Dead Space
That will keep you good for a whil