wrong on that one, the intel line runs software which is literally "universal" the PowerBook will run them as readily as the MacBook.
I was faced with a similar decision a while back, and decided to take the refurb PowerBook for 1349.99 over a CD MacBook.
Bear in mind that these are simply opinions based on my hands-on experience with these products. again, YOU ARE NOT REQUIRED TO READ ANY OF THIS!
Neither:
-support 64 bit architecture.
-offer impressive gaming capabilities.
PowerBook: (perfectly capable machine despite what anyone tells you)
-perfect display for watching DVD video and editing all forms of media.
-better case design and MUCH lower case temperature.
-speakers provide the best sound quality on the market.
-backlit keys are just sexy/keyboard is more comfortable to use.
-Firewire 800.
-wireless reception is ****.
-capable of running 7200rpm HDD.
-runs Adobe CS2 and Macromedia Studio 8 like a beast.
MacBook CD: (I stand by my decision not to purchase this system)
-worst modern display I've seen (not claiming to have seen them all) for that price range, though very bright.
-weak camera that you'll never use, unless you happen to be a webcam girl. (yes I realize it was developed for video conferencing

)
-can only support 5400rpm HDD or lower, which is lame.
-keys are not backlit, keyboard could be described as "usable."
-capable of running windows xp. *gags*
-capable of running windows vista...kinda
-speakers are nothing to fuss about, placement is a bit strange as well.
-WILL run hotter than your average laptop.
-larger trackpad surface, which could be considered an improvement in some loose sense of the term.
-magsafe is a novel idea.
-no worthwhile Firewire ports.
-remote is useless for a laptop of this size, when will you ever watch a movie from more than arms length of this computer?
-wireless reception is above par.
-case feels flimsy and you could practically use the edges near your wrists to commit suicide.
-doesn't perform well in CS2 or Studio 8.
-performance in CS3 will rival that of the PowerBook in CS2.
MacBook C2D: (At a similar price, you'd be an idiot not to purchase one)
-supports 64 bit architecture
-disregard any negative comments (regarding performance) above.
-wireless reception is unreal.
-case seems sturdier.
-WILL run cooler than your average laptop.
-very capable of running windows vista.
-most other negative comments still stand.