I just managed to fetch quite a good price for my 6-month old 1GHz 12" PowerBook, with the aim of making a low-cost changeover to the new revision C 1.33GHz model announced about a month ago. I picked up my new PowerBook yesterday, and after spending last night re-installing my software and restoring my personal files, I can say a few things about first impressions of the new machine. Firstly, the extra 333MHz of core CPU speed, and the increased front side bus speed from 133MHz to 167MHz is definitely noticeable. I haven't done any solid benchmarking yet, but there is a pronounced improvement in the overall perceived speed of the system. I know that the rotational speed of the 60GB hard drive in the rev C is rated the same as my previous rev B, but it also feels faster. I haven't checked the specific drive characteristics, but maybe it has a faster seek time or a larger buffer. Does anyone know? One thing is sure about the hard drive though...it's noisier. You can clearly hear the hard drive working when doing something disk heavy. On my rev B, you really had to listen closely to hear the hard drive working. Expose seems to run more smoothly with a few windows open. I don't know if this is due to the extra video RAM, the faster CPU, or due to my imagination. Anyway, at this stage I can't tell the difference in the fluidity of Expose animation between the rev C 12" PowerBook and my 1.6GHz G5...there was a definite difference with the rev B 12" PowerBook...while Expose was never really 'choppy' with 5-10 windows open, it was clear that it had dropped a few frames compared to the G5/Radeon 9600. Heat production also seems to be improved. The two palm rest areas on either side of the touchpad haven't got anywhere near as warm as the rev B used to. I've mostly been performing disk copy and software install operations so far, so maybe I need to get busy with some CPU intensive stuff to really warm this thing up, but impressions of heat production are good at the moment. One of my few complaints with the rev B 12" PowerBook also seems to have been addressed...screen brightness. I don't seem to have to squint in a bright room with the rev C model...maybe screen brightness has been improved a notch or two. Or of course it could just be that I now have a nice clean screen free of any dust (for about the next 5 hours) There's only one downside so far...IT WOBBLES!!! There is a very annoying wobble along the front left to back right diagonal axis of the machine. I have a folded piece of paper under the rear right rubber foot of the PowerBook at the moment to stop it driving me crazy while I type. The old rev B PowerBook didn't have any chassis or structural problems like this, although its battery never fitted flush with the chassis, whereas my new rev C has a much tighter fit between the battery and the chassis. Not perfect, but better. To be honest, I think I would prefer a little bit of an exposed lip from the battery rather than a wobbly notebook, but it's my only complaint so far. So any other new rev C 12" PowerBook owners out there? Any first impressions?