There are no settings for "best picture" since each TV, environment, person, connection type and item connected are different. The "combination" for the "best picture" is different for each application, just like a combination lock.
The TVs themselves vary a great deal as they come from the manufacturer, due to all the different components that went into the manufacture, each having certain tolerances.
Posting settings on the web is sometimes worse then useless because some people actually believe that they can apply to their TVs.
There is nothing wrong with discussing what the settings do and what idiosyncrasies a certain TV may have.
Often different components and different inputs can require quite different settings. I have set up quite a few HDTVs where the settings for the DVD player were unwatchable for the STB and vice versa, so obviously no "best settings" there. (recently components have been a bit more consistent, especially if the same connection type, like HDMI, is used for all of the components)
In addition, some devices (DVD players, PCs, etc) have their own settings for black levels or colour which will affect the signal to the TV. Also, I've seen identical models, some with 40 and some with 60 (scale of 0-100) as an optimum setting for a certain parameter like brightness, obviously again no "best setting."
See the following post regarding optimization:
If you are even tempted to use someone else' settings, you'd be better off simply using the default settings from the "best" picture mode as mentioned in the above link - say custom, user, etc. I've seen way too many internet postings with settings that are way off the appropriate settings for a TV and I've recalibrated a lot of TVs where the people have taken settings off the internet and the picture was lousy because of using those web settings.