I'm expecting to order a 15" MBP shortly. Ideally, I'd like to be able to replace both of my current machines - a dying Thinkpad (C2D 2.0GHZ) and a Core i7-based (2.8GHZ) desktop - with an MBP. The only performance-hungry program I depend on is Adobe Lightroom, which runs fine on the desktop and is essentially unusable on the Thinkpad. I think a big part of the problem is that the Thinkpad is prone to overheating and so frequently downlocks during CPU intensive operations. So I'm wondering how much of a problem heat is with the newer MBPs? Would the fans do a good job of dissipating CPU heat and keeping the CPU cool enough to run at full speed? Does anybody have experience with Lightroom on either the new MBPs or the previous generation, and how they compare to an i7 desktop like the iMac? The other thing is that I have a sizable image library (2.5TB) on 2 3.5" SATA drives, that I need relatively speedy and regular access to. Obviously I can't stick them both into the MBP like I've done with my desktop. What is the best option for fast access to 2 or more external drives? On the Thinkpad I was using USB 2.0, which was no fun at all. On the desktop, there's internal SATA. On the MBP though, there's only 1 FW800 port. Would I be better off daisy-chaining the drives over FW800, or splitting them between FW and USB? Are there any alternate means of getting fast external connectivity? Is using an NAS via Gigabit viable? Thanks!