This is one that has really been beat quite throughly to death on here several times before in the past.

Give the search function a go. You'll find plenty of arguements, fights, opinions, and all other sorts of yarns, lies, truths, confessions and piles of crap.

But just for laughs... the 30-06 is still the superior cartridge. If you really can't decide between the two... then you ought to just decide on a .280.