To be honset, after much tweaking over the weeks I've returned back to almost the original standard settings - I'm sure the picture improves the first few weeks of being run in. I'm using the default standard setting, just edging the brightnss down by one. For television i've reduced the sharpness to -4 as it helps cover up some of the flaws.
Yeah sharpness is major one, also since this TV has red push I would knock down colour a bit. There a couple of others, the auto backlight/contrast thing, then the film de-interlacing- makes everything look sped up. There's that DNIE like contrast enhancing mode, didn't like that (has split screen demo)