Yes, you can find a few more lumens, near the price. The BenQ W6000 comes to mind. It has a lot more lumens, but, the color is dominated by greens in its brightest mode. Knock down the mode so that the BenQ has pretty good color, and it's no brighter than the 8700UB.
With the improved color handling of the brightest modes, the Epson is now a much better projector for high quality HDTV content (and other digital content as well). I'll be moving this week to the new house/facility. If I get my rooms set up in time, and hook up the Home Cinema 8700UB for this weekend's football, then, I'll make one prediction: As I watch my fantasy football players, Randy Moss'es uniform will almost certainly look great, and that's without knowing which team will pick him up between now (Vikings just released him), and Sunday!