samsung np550p5c-s03in

Hi, I'm planning to buy a new Samsung laptop. I'm confused between two models namely : NP550P5C-S03IN & NP550P5C-S02IN. Ist contains Win 7 with blu-ray drive and other contains Win 8 without Blu-ray drive. So is it worth buying S03 or S02? Thanks in advance! :-?:-?:-?