I thought id reply as no one else has !!!
I havent used either of these- but thats a serious chunk of cash by the time you upgrade the Toughbook to 1GB of RAM - which is a nice feature to have.
The toughbook is hard to beat - though get the best processor you can - also a decent warranty and plenty of support locations dotted arount the globe is worth a lot too - not sure how much support you will get from Steatite? - not heard of them........
- also take a look at a Toshiba Tecra M5 - 80 gig HD - they have a shockproofed hard drive and a spill proof keyboard, wireless, a super fast Duo Core 2 processor, a good screen, (14in) Fingerprint reader and decent battery life - also a bit cheaper - and I got a 3 year International warranty. heres one on ebay:
eBay.co.uk: Toshiba Tecra M5 Dual Core 2 Duo T7200 1GB RAM Laptop (item 120088711215 end time 21-Feb-07 18:21:43 GMT)
Ive got the slightly older Duo Core T2600 M5 2.16 ghz processor, 1GB RAM 80 gig HD- its a nice size, very fast and its pretty rugged.
I bought mine off ebay -whatever you buy from there - just make sure there feedback is 100% (with lots of transactions!) and I made sure I paid with a cheque so I have an address to refer to if theres problems.
I wouldnt go over 15 inch - anything bigger is a pain in the cab of a Defender.
Worth looking back through the posts here too and see what the guys use on Bikes - they will get a harder time than in out nice cushy 4x4s !