Ok, so I am currently selling my PB and eventually my Mini so I can buy a Macbook. I plan on buying a refurb model. But not sure if I should go with the 1.83 or the 2.0 model. I do some graphic work at times, and some engineering work too. However, if I buy the 1.83 I plan on boosting up to 2Gig of ram and probably a 7200RPM harddrive. If I buy the 2.0 I will need to wait to get those specs. The thing holding me back is that I cant find comparison between these two with equal RAM set-ups. I would like to know if the extra L2 cache the 2.0 has effects things at all. This is probably a lame comparison but if I can save $150 off the bat, there is one upgrade right there.