I've already gone through all of the consoles at one time or another in the past 3 years. I've Owned 3 ps3s , 3 xbox360s, 2 wiis, 3 psps, and 4 ds. The order went like this
psp 1000
dsl
psp 2000
ps3 40gig
xbox360 20gig/ wii
xbox360 20gig
ps3 60gig
xbox360 arcade jasper
ds / dsi
wii / dsl / ps340gig
now i'm just left with the ps3 40gig as i've sold the wii and the dsl due to some financial issues. after that, i've come to find the ps3 as the best fit for my gaming/movie needs. yes, i use my ps3 as a sort off media center watching bd, dvd, downloaded movies. though i do intend to buy another wii and a ds or psp (1 handheld would do)
But with the ps3 "wand" motion controller, i find myself in a "wait and see" state. if it turns out to be good and or at least function like the wiimote, i don't think i'll be wanting to buy another wii.
so with that, probably a psp or a ds with psp being higher.