I'm heading out to the store tomorrow to get either the 2.66GHz 8-core or the 2.93GHz 8-core Mac Pro. I'm stuck with a dilemma. If I get the 2.66GHz model, I will buy a Intel X25-E 64GB drive as my boot disk and then get 3x 300GB VelociRaptors in RAID 5 along with the Mac Pro RAID card. It will also house 6x2GB for a total of 12GB of RAM. If I get the 2.93GHz model, I will buy 4x 300GB VelociRaptors in RAID10 and just use the built-in RAID option. This will be also mean I will only get 6x1GB for 6GB of RAM. I will buy the Radeon 4870 for either choice. Which would offer me a better long term choice? Yes I know this sounds silly, but I'm trying not to spend too much (This is already over my initial budgeted priceabout twice as much ). The total purchase price for both configurations is about the same. My intended usage life is 3-4 years. I already have a Drobo for backing up, so I have that covered.