Because these are two of the best selling home projectors, I had written a comparison piece shortly after I finished the Epson review. Although that article doesn't follow the same format as these comparisons, it makes little sense to re-invent the wheel. Also that comparison was written shortly after both were reviewed (11/09), not 5 months later (today). As a result, we are simply providing you with a link to the Epson Home Cinema 8500UB vs. Panasonic PT-AE40000 comparison.
You'll find the link to the comparison, immediately below the table of contents.