what is the best option for one button controlled all HT?

Hi Everyone

I am currently building my first HT.  I wanted to explore the idea that we see all the time at Best Buy or small high end HT dealer, that is one push of a button would turn off the lights, on the projector and the rest of the HT components.  People had suggested to me control 4, lutron, and savant.  Please help

Thank you in advance