Purchased a new (refurb) baseline 2.8 Mac Pro + ACD ($2900 + tax). Works fine so far, a lot of hand wringing whether to buy now or not as there hasn't been a refresh, but my job requires a more substantial computer and 15" i7 MBPro was affecting productivity for Flash CS5 animation (broadcast)/1080p exports, etc. I automatically navigated to the Mac Pro as the workstation to have both power and OSX. I am within the return period if it doesn't work out for my situation. Assuming there may be a more powerful iMac on the horizon, I have looked at a few options that will prevent this baseline Mac Pro being left in the dust, and having to repurchase in another two years. Any opinions? I have sited a few of my options should I stay the Mac Pro route. (and cure it's whirring noise) 1) upgraded 6 core CPU, @$599?, likely voiding warranty..not ideal. Changed plenty of CPU's on PC's but still, will it make that much of a difference in my work to be worth that risk. 2) The 5870... expensive again, and two GPU generations old. I think we are in the 7xxx's now. Games like Portal 2 run great with 5770 as it is... unless the 5870 is a good help to Flash CS5.5, there isn't a rush. 3) Load up on RAM (4 x 4 for 16GB; or 3 x 8GB sticks for 24) and a PCIe SSD like the Accelsior (bootable) to give the Mac Pro 6Gb/s speed as opposed to the 3 Gb/s speed in the Drive trays from what I understand. (?) 4) Something to stop the constant fan? hum from the tower. I thought the Pro's were very quiet, or is this to be expected from the towers? Mine sits about two feet from me. Whatever it is, after sitting at the desk for 8 hours working, it's a bit grating. HMMMmmmmMMMMMmmm... and so on. I am coming from an iMac/MBPro, so it might just be normal in the Pros. Worth it or better off with a newer machine like a DIY PC workstation or new iMac should it appear?