I have a Mac Mini Server 2011 that I plan to use as a HTPC. Mainly it will be an iTunes server for ATV2. I needed the quad-core for Handbrake transcoding performance (from EyeTV source). I may also run Hulu, etc on the Mini since it is connected to my TV. So obviously I don't need any of the server OS functionality. Is there any security or performance advantage to installing the client OS? Can I go back to the server OS if I need to? Are there any suggested settings for using the server as a HTPC? Thanks for any advice.