I am using standard mode with warm 2. It still seems to be a little blue to me, mainly in low light movie scenes. Haven't tweaked here yet.
I have backlight at 20, contrast at 100, brightness 45, sharpness 50, gamma 0, haven't played with the white balance, standard mode, warm 2. I think this is just about all the settings I can adjust in PC mode.
I like standard sound mode with the TruSurround HD on. The TruSurround HD seems to give some depth to the sound. I have the equalizer 2 steps up at 10k - gives a little more air. I did notice that the left speaker seems to sound much better than the right. I have the balance 2 steps to the right to compensate. The 5000 I listened to at Best Buy also had the left speaker sounding much better than the right. I might understand why when I take it apart.
In the service menu, you can shut off the speaker DSP which really makes a lot of difference (for the worse mostly). If I remember correctly mainly because the bass will rattle the whole TV when you do this even at normal listening levels. There is a lot of DSP going on with the speakers.
You can also shut off the Energy Star logo in the menus. If only you could shut of the LED TV power meter logo that comes up when you press the info button. That thing annoys me. I do not want advertisements built into the TV.
The 5300 has a nice backlit remote. You can shut the backlight totally off or when it is on, it lights for a while when a button is pressed. I have been posting in both the 5000 and 5300 threads. I am not sure where I am posting now, so just throwing this out there. I really think that the 5300 gets quite a bit more for the extra $30. Another HDMI input. 2 HDMI on the back instead of the side. Backlit remote. The Wi-Fi stuff which I do not use. And it has two USB ports on the side. One which you can hook a hard drive up to. I tend to not use all this stuff, but might.
I am worn out. Time to chill.