I am going to purchase a mac pro. I am looking for opinions on which one I should get. I will be using it mainly for home use, home movies, pictures, surfing the internet, word processing, powerpoint, etc. I want the expandibility of a mac pro and am not interested in the imac. I have a high end cannon camera and hd video camcorder. I am thinking of either the basic 4-core 2.8 ghz option, or bumping it up to a 6-core westmere processor. I don't know if it is worth the extra $1200.00 for the processor upgrade. Is there a big difference in performance? Or should I consider the basic 8-core option. Thanks!