Having read a number of the iBook/Powerbook rumor threads, I think that it is a fair statement that there is a sentiment that Apple notebooks are underpowered/overpriced compared to their Windows counterparts. However, there is one factor that is consistently overlooked: weight and size. iBooks are 4.9-5.9 lbs in weight, while Powerbooks are 5.4 lbs. In the Windows world, it seems that the only notebooks available that are in this weight class come with mobile Pentium III processors. That's right -- mobile Pentium III -- not even P4 chips. The only exceptions that I've found so far is the Dell Latitude C640 series, which are 5.4 lbs and the Fujitsu LifeBook E Series, which are 5.7 lbs. Both of these machines have mobile P4 processors. But if they are equipped similarly to a Powerbook, their price is up in the $2500-3000 range. The PIII processors that are being used in these computers are typically 750-800 MHz chips, One of the Toshiba Portege computers is equipped with a 933 MHz PIII, and one of the Fujitsu notebooks has a 1.2 GHz PIII. The clock speed gap issues aside, I don't think many people would have a problem believing that the current pre-rumored-speed-bump 600-700 MHz G3 processors in iBooks can match a 750-933 MHz mobile PIII chip without much problem. Even though cross chip comparisons are inherently problematic, I would be interested in seeing benchmarks comparing G4 chips to mobile P4 processors. I would suspect that the gap is not that great. There is at least one such comparison that puts the processing power of a 800 MHz G4 within shouting distance of a 1.8GHz full blown P4. My conclusion is that if you want to compare 5 lb. Apple laptops to desktop replacement class notebooks weighing 8lbs. and up, then yes, Apple notebooks may not look so good. However, if you restrict the notebook comparisons to laptops of similar size and weight, Apple machines should be able to hold their own. And that's not even including the new machines rumored to be out tomorrow.