Received the RS4910U (firmware updated) Saturday morning, installed it and was NOT disappointed!! Looks amazing, black levels and contrast are noticeably better than the Sony! The DI is silent as far as can tell and not noticeable and it seems to close all the way when appropriate... the Sony didn't. Everyone comments on how the Sony 55ES has great color reproduction straight out of the box, but regardless of the fine tuning I performed based on my Spears & Munsil blu-ray and expert reviewer settings, there was always a hint of green in certain situations. Maybe I'm just overly sensitive to green, but I found myself trying to talk myself into thinking it wasn't there. I love the color on the RS49 and the sharpness with eshift 3 and Darbee is perfect. Thanks to those that helped me make this decision. Now I just need to find a buyer for my RS46... shouldn't be a problem.