The Truth Hurts

I'm about to upgrade from my Sony F707... and i'm torn....

the Sony F828 8MP pix look tight, plus i'm already familiar with the operation...
the Canon 8MP Powershot Pro1 pix look a bit better...
the Nikon Coolpix 8MP pix are the worst of the 3 8MP cams I've looked at...

and finally,
the Canon EOS Digital Rebel 6.3MP digital SLR seems to take considerable better pix than all three 8MP cams...

all four are the same price...
anyone got experiance with any of these?
if you had a choice, which would you prefer?