In the market for a 13.3-inch MacBook Pro. For work, I will have to have a Vista VM running 45-50 hours a week. Normally, the 2.26 HGz model would probably be all I needed, (this is not my primary machine), but the Vista VM runs much better with 2 vCPUs. I know on my iMac that slows the host OS down. So... Would a 2.53 GHz really be all that much faster, while running a VM on an external FW800 drive? I'd rather get the 2.26 GHz, up it to 4 GB of RAM, and if financially possible, get the SSD internal drive... Thoughts?