Ohhhhh boy, a question about Apple's and PC's, I can see quite an argument coming on
Well I will kepp it simple and to what I know, Apple computers are good at many things, and PC's are good at many things (dispite common beliefs) anyway, if you are comfortable in using an Apple computer, then from what I have found and heard, they are far superior in the multimedia area, although If you want to play alot of games, they do not have the compatability for games that PC's have because most games come out designed for PC's. You pretty much have to use the Apple Operating system. If you want more on Apple's then you will have to ask someone who knows more than me, which is most people, I used to hate them , but after using them at school I found that they are quite easy to use.
Anyway, I am a PC man, so here we go.
Pentium 4 = GREAT!!!
Pentium M:Centrino = Good(I think)
Anyway, I am a PC man so I would go with the Pentium 4, only because in a laptop, you need all the specs you can get, because I think that they are lacking when it comes to data transfer speed, they are also much more compatible with devices and software, replacing parts is MUCH cheaper and easier and so on...
Heating up has never been a problem for me in laptops, and most can have giant fans plugged into the side if neccesary.
As for battery life, from what I have seen, Mac's have better battery life, but I do not own one so I cannot give specific details.
Anyway, this is from my own knowlage, so alot of it is probably wrong [img]smile.gif[/img] so anyone can feel free to correct me.
Hope this helps.