So, i'm a video editor and have a mac mini. Now, the Mini really isnt doing it for me anymore. So my question is, should i buy a Mac pro from 2007 or 2008 for around $1300 refurbished from some website, or get a 21.5 inch imac for $1200 that's only dual core but has faster clock speed, turbo boost, and hyper threading? Im buying in summer so new imacs will probably be out by then, but what should i go for for video editing?? BTW the mac pro would have a clock speed of 2.66 ghz.