Well Currently I have an unibody Macbook Pro. I've started to notice it isn't as fast as I hoped it would be in regards to CAD performance. So I am looking at the possibility of selling my MBP and buying either a current generation Mac Pro, or a last generation Mac Pro. The problem is that I don't want to spend too much extra money on the Mac Pro. I figure I can sell my Macbook Pro for $1700 or so. Would the graphics performance be a LOT better on the current generation Mac Pro? What about the last Mac Pro w/ 2.6GHZ Xeon, 4GB of ram, and 8800GT? Thanks. Also if anyone has recommendations on where to buy a Mac Pro, let me know My budget is only $2500, but that also would need to include monitor.