See here [link] Add the i7-3630qm, 8GB Kingston (2*4GB) 1600mhz ram (upgradeable to 24gb with Windows 7/8 Pro 64bit), 120GB Intel 520 ssd, 1tb Scorpio Blue - £901. Or [link] add the 1920*1080 display, i7-3630qm, 8GB Kingston 1600Mhz (2*4Gb) ram. GT 640m, 120GB Intel 520 ssd, 1tb Scorpio blue - £825.
I am swaying towards the Samsung at the moment I looked up the i7 on each and it appears the Samsung is faster and has turboboost plus the ssd and possibility of upgradable ram for only £100 more. What's difference between the nvidia and amd I tried to look up both but graphics cards obviously aren't as straight forward as the rest of the hardware
The Chronos looks much nicer due to it's longer battery life. If you're looking for more ram though I'd probably suggest looking into a desktop, unless you absolutely have to move around with your work.
has to be a laptop need something portable as i may need to take it to work in future for work on my employers website, also i tend to leave my laptop constantly plugged into the power source as if it were a portable desktop so battery life shouldnt be an issue unless ive been doing something wrong and its not supposed to be left plugged in all the time lol.