I'm currently choosing between these two models (Epson 8700UB vs 5010). 3D would be fun but not really required. Black levels seem to be pretty similar and good in both cases, so I'm mainly considering the difference (very large on paper) in Lumen output between the two models. Of course, I'm contrasting this with the pretty large difference (around $900) in price.
I'm planning to go with a screen that's around 140-150 inches diagonal, so I would like to know your experiences about the difference between the two projectors at such a large size. Would the Epson 8700UB be unable to provide sufficient light for such a screen, without running the lamp out really fast? If so, would the 5010 be more economical in the long term?
The room will be completely dedicated for movie viewing and dark at more or less all times.