Yup, feel that for the man-in-the-street usage, going for the Std Settings is a starting point.
Then adjust each value to yr own preference...the best judge is yr eyes!!

Toshiba's Auto View setting can b kinda annoying, too!
Supposedly works in tandem with its ambient light sensor as well as input signal sensor to give optimum viewing display...
However, changes are made suddenly at times... causing one's vision to be affected & a need to adjust to darker or brighter display...

Feel a constant setting wld be a better option...