Which laptop should i buy?

out of these 2: http://www.pcworld.co.uk/gbuk/advent-sienna-300-04868401-pdt.html and http://www.pcworld.co.uk/gbuk/advent-sienna-500-04868440-pdt.html they both look the same but one is faster i like the first one because of the price but i like the 2nd one because of the processer and ram, im finding it really hard to choose, i use a laptop for music, surfing the web, games (not that much though and i will proly have to do it on low settings i know), recording the screen, and i need one thats fast and responsive i know the 2nd one is faster but i think the first one is still fast, so which one do you think i should get? Thanks.