Prices straight from manufacturers' websites:
MacBook Pro 17-inch
2.66GHz Intel Core 2 Duo
4GB Memory
320GB hard drive
NVIDIA GeForce 9400M + 9600M GT with 512MB
No internal optical drive
£1949
3 year extended warranty excluding accidental damage- £273
Total= £2222
http://store.apple.com/uk/browse/home/shop_mac/family/macbook_pro?mco=MTI4MDI
HP dv7-1050ea 17-inch
2.26 Ghz Intel Core 2 Duo
4GB Memory
500 GB
NVIDIA GeForce 9600M GT
Blu-Ray ROM with SuperMulti DVD±R/RW Double Layer
£ 1069
3 year extended warranty including accidental damage- £155
Total= £1224
http://h10010.www1.hp.com/wwpc/uk/en/ho/WF06a/321957-321957-3329744-64354-64354-3744231.html
I've heard that you can buy and fit OEM RAM for Macs yourself (can anyone confirm this?), but just for comparison Apple will charge you an extra £840
to bump the Powerbook up to 8GB RAM, whereas the first price I found for the equivalent upgrade for the PC is £446- that aint no small potatoes.
The Powerbook is unquestionably the more powerful of the two, Apple's build quality and QA is far superior (and this particular hp model hasn't had the best reviews to be honest) and it weighs about two thirds of the hp, but if I was looking for a laptop to use in my daily work, there's no question that the pc would be my choice, if only because effectively it's 95% as powerful as the Powerbook, 500% as useful (app-wise) and more or less half the price. Looking at it another way, if I was looking for a small portable office setup that I'd use for mostly modelling and rendering for £226 more than the cost of the Powerbook I could buy TWO of the hp machines which would
a) take care of me and a colleague and/or
b) be a pretty powerful, yet extremely compact and efficent render farm with approximately >180% of the speed of the one Powerbook and/or
c) be a desktop for the office plus a portable workstation for presentations, etc and/or
d) allow for almost zero down-time when anything does go wrong with one of the machines and it has to be serviced, repaired or recovered as you just switch to the other one and/or
e) allow for completely swappable (and of course cloneable) harddrives in the event of hardware, firmware or OS failure. Cloning the harddrive of one machine after it's set up properly with all major apps and updates installed could even save 1 or 2 days of setup time for the second machine.
Yep, no surprises that I'm a PC fanboy, but I just prefer to spread my money around rather than put it all in one company's coffers and for me the cons of a less stable/reliable platform are far outweighed by the pros of cost vs. power, self-reliance and tweakability which appeals to the I-like-to-take-things-apart-to-see-how-they-work part of my brain. 