I returned a E540 due to major ghosting. Every dark vertical line had a white/gray shadow to the right. I have cpd e200 and it displays this too, but so sligtly as to be hardly noticeable. Other than that my e200 has better than the g540 in picture quality. The E540 also had horrible vertical convergence. The top and bottom is always off. Too bad sony couldn't include independent top and bottom vertical convergence, though they did for the horizontal covergence. Purity could not be corrected with landing and text was slighlty blurry at 1600X1200 though this was the recommended resolution. 1280 rez was sharp, though it still displayed the other problems. In general, the e540 had very good color and contrast/brightness but annoying text (sharp except for annoying shadows). I was disappointed and considered "upgrading" to a G520, instead I ordered mitsubishi dp2060u (still waiting for arrival) after reading great reviews. Perhaps my sony was defective. I hope mitsubishi will live up to my needs otherwise I'll always be wondering my I didn't give sony another chance, if indeed my particular was defective. Everyone seems to like sony better.
I've had a hard time searching for e540 reviews and can't comment more than by my own experience. The G520 has more reviews, but according to zdnet, cnet, or pcmag (i forget) it was just "good" while the dp2060u was excellent in both text and graphics. Displaymate rates the gdm f520 as the best aperture grill ($1500!) while the dp2060u falls in at #2 ($725). The G520 was not listed. This is why I chose mitsubishi.
I hope I don't scare you away from the e540.
Let me know your experience, specifically about the ghosting as this is most important to me.