Hello everyone! I need a little advice in terms of the dual 1.8 versus 2.0. I'm in the market to purchase the awesome G5 and having trouble deciding which. I've read in Barefeats about the performance, and it doesn't look as if there is much of a performance issue between the two. So that leads me to ask if I save the extra $400 bucks and buy the 1.8 with the extra goodies like the 9800XT card, do you all think that's worth it or should I just go with the Dual 2Ghz...