I ordered al Dell XPS 17 last week and am waiting for it to arrive, for the specs i went for it come to £1342.86 and would say it would quite happily run everything you want it to do. Here are the specs:
210-37713 XPS 702x : 2nd generation Intel Core i7-2670QM processor 2.20 GHz with Turbo Boost up
to 3.10 GHz
1 996.35 996.35 S
200-95507 N11X7M07 1 S
230-12436 Display : 17.3in FHD 3D WLED TL (1920X1080) 1080p with 2.0 Mega Pixel Integrated Camera +
3D Glasses
1 S
340-24571 Ship Accessory : English Docs 1 S
340-24595 Resource DVD : XPS L702x 1 S
370-18983 Memory : 12288MB (3x4096) 1333MHz DDR3 Dual Channel 1 S
400-21831 Hard Drive : 750GB Serial ATA (7200RPM) 1 S
429-15549 Optical Drive : Tray Load Blu-ray Disc BD-Combo (Reads BD and Writes to DVD/CD) 1 S
450-15039 Power Cord : UK 250V 1 S
450-16096 Power Supply : XPS 150W AC Adapter 1 S
451-11543 Battery : Primary 9-cell 90W/HR LI-ION 1 S
460-11379 Carry Case : Not Included 1 S
490-12665 Graphics : 3GB NVIDIA GeForce GT 555M Graphics Card - 3D Capable 1 S
506-10188 TV Tuner : Not Included 1 S
555-13616 MOD,CRD,NTWK,6230,CNB,WW 1 S
556-11022 Mobile Broadband : Not included 1 S
583-14528 Keyboard : Internal UK/Irish Qwerty Keyboard 1 S
619-32209 Operating System : English Genuine Windows 7 SP1 Home Premium (64 BIT) 1 S
620-13455 OS Media : MUI Windows 7 SP1 Home Premium(64 BIT) Resource DVD 1 S
630-13325 Software : Microsoft Office Starter: reduced-functionality Word & Excel w/ads. No PowerPoint or
Outlook
1 S
640-11630 Software : Datasafe Local 2.3 Basic