Bewildering choice buying new laptop. M, Centrino, P4 ????

[Feneris]

I'm after a new laptop to replace my Dell P3 but am bewildered by the choice out there.

It must be a laptop (not a PC), I'll mainly use it for internet, watching dvd's, connection to digital camera/ video camera, v. few games.

I'm mainly focusing on Dell as they are a solid company and seem sensibly priced. I'll spend around £800, which gets a 15" widescreen, dvd-rw, 256mb, 40gb etc (Inspiron 8600c). My main decision seems to be between the P4 and the Pentium M processor. Pricewise a 3Ghz P4 is the same as a 1.4Ghz Pentium M, (which I know is quicker then it sounds). The P4 system is bigger and heavier, I'm not too concerned about the shorter battery life.

Alternatively I could get a Sony from Dabs for the same money but it's a 3Ghz Celeron ??? Or have I missed a great offer from another company??? Does anyone have any extra idea's for me??? Thanks, F

PS. One concern also is that XP doesn't come with any media. If in a years time the hdd fails, where do I get XP from. I imagine I can return the laptop to the manufacturer but will get hit by a massive bill. How does one get XP if you get a new hdd from dabs.com etc???