I believe that setting your input to 1080i was a good choice, especially for your HD Channels. Your friend was probably suggesting the higher resolution because there is more information sent over a 1080i signal that can be used, rather than counting on your television to upgrade a 720p signal to add detail.

As far as settings, it really has to do with the room the television sits in. I don?t have any pre-programmed suggestions for how to do this in your particular setting. Every pair of eyes sees the picture and color differently, so there is no general ?one size fits all? settings. CNET might be able to give you a starting point but it's fun to experiment with settings on your own until you find something you like.

The other option is to get the television professionally calibrated, but most people can find settings they like by just adjusting the settings themselves.

Hope that helps!

Mr. Samsung