Hi Everyone, First post, Bear with me. Looking to buy a Mac Pro and just need some advice with regards to the many processor and core configurations available. I dont mind buying a few upgrades in the future. I use Photoshop Daily. Probably buying from E Bay. Just need to know which machines i should be looking out for. i.e. Dual or Quad and Minimum Ram and 256 or 512 card. Many Thanks. Dave.