Hi, I have a late 2007 Mac Pro 2.8 GHz Quad-Core Intel Xeon and I am wondering I should keep it. It's a 3 year old machine and my Applecare just run out. I mostly do image processing using CS5 Photoshop. I am thinking on maybe keeping it for another year or a bit longer. I have 10 GB or RAM and two slots available. My plan is to buy another 4 or 8 GB of RAM and get couple SSD drives from OWC, one for apps and system folder and another 40gb for scratch disk. Would that be a good thing or should I just sell it and get a newer Quad machine? While I do understand the newer machines would be faster overall, am I going to see a major increase if I do the upgrades above? I would like to save the cost of a new system now, but if the speeds are significant then I might just bite the bullet. Thanks for any feedback!