Regarding the Intel vs PPC issue, it's a no-brainer. Apple biggest challenge going forward wasn't choosing a new CPU vendor, it was too assure software compatibility for both PPC and Intel. Apple has a reputation as being a smart company, and the plan they've come up with is effectively bulletproof. If there was a major problem, you would have heard about it by now from the developers, all of whom are conveniently gathered under one roof this time and thus easy to poll. Apple's major software providers have all come forward and signed on to the plan. In fact, virtually NONE of the software developers has come forward with a story that Apple's switch has presented major obstacles for them going forward. Thats a major (and thus far, hugely overlooked) achievement for Apple. Most of the attention has squared on the somewhat ironic fact that Apple is switching to Intel processors
Well, seeing how IBM did such a thorough job of screwing the pooch, it isn't all that ironic, as we'll see soon enough. The "osborne effect" is another issue that's dead on arrival. First, it assumes that Apple has pre-announced a product that has such tremendous appeal that it's entire computer line will be overlooked in anticipation of it. Apple hasn't announced any future products, in fact, they remain steadfastly tight-lipped about future products as they always have. Second, the switch away from PPC processors assumes that Mac buyers purchased Mac's because of the PPC processor. The fact is, blasphemous as it may sound around here right now, no one really cares about the processor. Most consumers don't even understand how a processor works, much less understand it's role is inside the computer (the megahertz myth). What consumers do care about however is the computer they buy - the box that they pay for, turn on and use everyday. I think any honest Mac user will admit that it's the combination of the OS, software, style, and machine speed (however the user may quantify it) that make up the reasons for buying an Apple box. If the OS is Mac, and the machine is fast, then it's all good. And that's where Apple wins.
All Apple needs to do with it's next hardware update, whether it's PPC or Intel, is to provide something that is roughly 20 percent faster than the machine it replaces. That's pretty much what they've done in the past and if they continue to do so, no one is going to care about what company makes the CPU inside or is going to complain.