I'm looking now at buying a Mac Mini to run a HTPC, mostly through Plex/Boxee w/ Handbrake for encoding and possibly playing some MKV files. What is the oldest/worst specs I should look at for the machine? I dont want to spend over $500 total, and I've heard that the Intel Core Duo's would work, but what else? Would something like this work okay? http://cgi.ebay.com/APPLE-MAC-MINI-...ewItemQQptZApple_Desktops?hash=item27acc129b5 I know the RAM is low and it's cheap/easy for me to upgrade the RAM. But what about everything else? Any suggestions on the best machine for the money to do this? I know I'm playing w/ fire here, but what about a PC (non Mac) for this, running Boxee and Windows Media Center? That way I can plug my OTA antenna and get free HDTV w/ DVR. Wouldn't that work better?