Powerstroke2000,

Thanks for joining the forum.

There are some settings out there that people note are "the best", but of course, that depends on several factors including the time of day you watch the most television (A perfect time to adjust your set) as well as the amount of ambient light in the room, the size of the room, the color of the room, etc. I might try scanning some of the sites out there to pick the best settings and then manually adjust them to your taste.

On that note, inputs have their own settings, so the same settings for HDMI-1 will be different than HDMI-2, so making those settings should be based on the source they are being used for. (For instance, for tuning your DVD input, use your DVD player, etc.)

The content on the Content Library is permanent. It can't be moved or changed, but it can be updated by downloading additional content and installing that content on a thumb-drive. Information for doing that is found here in our helpful How To Guides:

http://www.samsung.com/us/support/guides/howToGuideSearchList.do?group=&type=&subtype=&model_nm=LN52A750R1F&dType=D&mType=UM&vType=R&prd_ia_cd=02010100&acc_ia_fl=&disp_nm=LN52A750&menu=guides

And here is a quick shortcut to the content you can download:
http://www.samsung.com/us/consumer/learningresources/tv/beyondtv/contentlibrary_download.html

Keep me posted!

--HDTech