Well i just bought a Dell XPS 17 direct from Dell, if you have a look round there is a nice 10% voucher code, i got the following:
XPS 17
2nd generation Intel® Core™ i7-2630QM processor 2.00 GHz with Turbo Boost 2.0 up to 2.90 GHz, English Genuine Windows® 7 Home Premium (64 BIT) £ 866.22 1 £ 866.22
Item Description
Base 2nd generation Intel® Core™ i7-2630QM processor 2.00 GHz with Turbo Boost 2.0 up to 2.90 GHz
Memory 6144MB (1x2GB, 1x4GB) 1333MHz DDR3 Dual Channel SDRAM
Keyboard Internal UK/Irish Qwerty Keyboard
Video Card 3GB NVIDIA® GeForce® GT 555M Graphics Card
Hard Drive 1TB (7,200rpm) Serial ATA Dual HDD - (2x500GB)
Microsoft Operating System English Genuine Windows® 7 Home Premium (64 BIT)
Optical Devices DVD+/-RW (DVD, CD read and write)
Wireless Networking Intel® Centrino® Wireless-N 1000 (EUR)
Cables UK 250V Power Cord
Shipping Documents English Documentation
Gedis Bundle Reference N08X7M06
Service Standard Service - 1 year of Collect & Return 10 day coverage included with your PC
Extended Service 3 Years Next Day In-Home Service with Premium Phone Support
Integrated Mobile Broadband Mobile Broadband Not Included
Order Information XPS L702x Order - UK
Primary Battery 9-cell 90Whr Lithium Ion battery
Carrying Cases No Carrying Case
Dell System Media Kit XPS L702x Resource DVD
Color Choice Silver Anodized Aluminum Cover
Accidental Damage Support No Accidental Damage Protection
Online Backup DataSafe Online Backup 2GB - 1 year licence
TV Tuner and Remote Control TvTuner Not Included
LCD 17.3 FHD WLED AG (1920x1080) with 2.0 Mega Pixel Integrated Camera
DataSafe Datasafe Local 2.3 Basic
Microsoft Application Software Microsoft® Office Starter: reduced-functionality Word & Excel w/ads. No PowerPoint or Outlook
Protect your new PC McAfee® SecurityCenter 15 Month Subscription
Power Supply 150W AC Adaptor
Operating System Recovery Options OS Media MUI Windows® 7 Home Premium (64 BIT) Resource DVD
Total excl. VAT VAT Rate VAT Total incl. VAT
Sub-total(s): £ 866.22 20.00% £ 173.24 £ 1,039.46
Total Price: £ 866.22 £ 173.24 £ 1,039.46
Also thanks to my company i get VAT off

as it will be used primarly for work, but as you can see its a very nice spec with a Full HD screen compared to the HP as well as a 3 year in-home warranty. Also when taking into consideration between the XPS and an Alienware, apart from the GCARD there is absolutly no difference apart from quite a bit of £ so it was a no brainer
Regards