I think they'd better. The TiBook is in serious need of an overhaul. It needs to be atleast 1Ghz to try and keep up with the wintel laptops 2.5Ghz+ P4's. I know mhz isn't everything, infact far from it, but, when you consider most x86 laptops use these hight speed AMD's and Intel's with DDR-RAM, high-end portable graphics and now even with DVD-RW's, Apple need to do something to justify the hefty price tag of the TiBook.
Edited for typos.