For one specific review, and not an aggregate review site, I'll go with Gamespot. IGN used to be too 'easy', now they're trying to overcompensate to regain cred (and the reviews are too long-winded and sometimes poorly-written), 1up seems to overrate a handful of games and then underrate even more, and everyone beneath the 'Big Three' are either too hit-and-miss or specialized as a go-to review source.
Regardless, though, beware the early reviews, be they in HTML or print. It's a shady business, for the most unnecessary observation of the week.