Hello, I'm looking to replace my 2010 Mac Mini because it lags when playing 1080p MKV files. The only thing I need it for is iTunes music playback and watching movies, which are mostly 1080p MKV files. Which Mac Mini has the best value for that? Can the current base model do that? Or will I have to get the medium one? Or could I even consider an older model and pick one up for cheap? Thanks for your help!