In my opinion Touring Plans is among the best resources for accurate - or at least very close - actual historical hours.
A word of caution about the WDWInfo hours - those may or may not be the final hours. I can tell you right away that 7/3 and 7/4 aren't right on that link, so I'd be cautious about using it if you need 100% accuracy.
I do my own tracking of hours to some extent, anything specific you're looking for?