So I recently got a BlackBook! I have been using my PowerBook as well and comparing it. To be honest, it doesn't look so good for my BlackBook BlackBook Pros: -Great feel, amazing design. -Easy process to put an HDD in, RAM is easily accessible. -Decent performance -Battery Life -Webcam -MagSafe & magnetic lid -Lifting the lid doesn't pull the bottom half with it. -Heat Now here are the BlackBook's Cons: -Core Duo tends to get slow. -Fans can get extremely loud. -Software support, 10.6. -Architecture, since a Core Duo is 32bit this means all software won't be compatible. This is bad since you can't determine the architecture difference when get applications. I have went through tons of downloads so far, and have ran into "Stopped Unexpectedly" or "Not compatible with this Mac" -FireWire 400 BlackBook overall is a 6/10(10.6), while it can be a great laptop for things I do. It comes with its cons, just like any other laptop you'll get. Compared to my PowerBook, I think they could have done better. On to the PowerBook, there are obviously somethings I can't compare it to but I will try my best. PowerBook Pros: -Design is amazing,keyboard is flawless.Mouse is great. -Screen looks great -Sturdy -Fast -FW800 -More ports. -Backlit Keyboard -Great software support(for its time) Cons: -Old Software -Heat -Upgrading, or replacing HDDs,RAM,etc -Freezes Occasionally -Lid clip -Loud DVD drive -Flash PowerBook overall is a 7/10, even though it is PowerPC and is outdated it still works great. It does have its cons but I can live with it. It is very fast and very snappy. In my opinion, the PowerBook beats the BlackBook. Keep in mind, this is my opinion. Your experiences might be different. What are some tweaks for the BlackBook that I could use to speed up Mac OS X 10.6?