I have just bought EH5000 after a lot of research, and this TV is awesome in terms of contrast and though presets are limited, you wont need as many. USB is a boon, and it just plays everything from JPG files to FLV format, almost like a PC, something that LG/Sony does not do well. Sound is also very good though I use my old HTDDW885 with the Tata Sky HD box and that gives great results. Panasonic should be good as well, for your info, LG does not make their own panel, they source it from Panasonic, Samsung makes their own panel. Viewing angle is never a problem, with full back lit LED, you get a better contrast (with no local dimming if I am correct); for the comment made by frost, I also had the same issue initially, but the reality is, you do not need that high brightness to enjoy it, too much brightness kills even the best photo taken by the best DSLR in the world. Too much brightness also decreases your panel life and eats more power, harm for eye etc etc. The running power of this TV is stunning - jut 35 watts!
Overall, I am very happy. Give it a time for burn in for 3-4 hours then it improves a lot, and if you are watching through cable and not Sat, picture quality will be lousy, for that low resolution TV will look better.