I recommend you buy the Toshiba! But DON'T buy it in PC World, for example this
seems to be the same lap-top on Pixmania for €504, plus delivery of €14.90.
But there are also other online stores that offer better prices than PC World.
Pixmania is owned by the Currys/PC World/Dixon group so its just as reputable as buying in the store, but you can save almost €100!
I am on my second Toshiba and I think the quality is excellent. I don't think you can expect to have a lap-top last more than 4 years (and thats if your lucky) and my last Toshiba laptop bought in 2002 although a bit slower than it was is still being used by my younger sister.
Hope that helps!