my laptop i bought a couple of years ago for a few pennies has decided it is time to go to laptop hell so need some advice on a new one

looking for something with a 17" screen, powerful (needs to run 5-6 poker sites) so i guess i5 and 8gb of memory, doesn't need to have great graphics (won't be used for games), decent battery life.

got up to £1k to spend, any advice?