I'm having trouble deciding between 2 laptops. The lenovo z50 70 which has a i7 4510 u with gt840m graphics 4gb. The screen is 1080p but not anti glare. 8gb ram with 1tb hard drive and 8gbssd. The other is a hp envy k200na with an i5 5200u. Full hd 1080p display and it is anti glare. 8gb ram and 1tb hhd with 8gb ssd. It has a 840m 2gb. Im deciding on these 2 and will there be a big performance gap between them. The hp is £480 but the lenovo is £570. Will there be a big performance gap in normal and gaming use. If not I'll get the hp but if there is I'll get the lenovo