I was just about to buy the Samsung 840 pro 128gb ssd (http://www.amazon.co.uk/gp/product/B009LI7CKI/ref=ox_sc_act_title_4?ie=UTF8&psc=1&smid=A3P5ROKL5A1OLE#productDetails) when i stumbled upon the SanDisk SDSSDP-128G-G25 128GB (http://www.amazon.co.uk/gp/product/B007ZW2LY4/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=A3P5ROKL5A1OLE#productDetails) for £44 less and my googling attempts have not shown any major differences yet, so why is the Samsung so much more expensive and is it worth the extra money?