Would it be best to buy the Blade Runner ultimate edition on blu-ray instead of dvd?

Hi, Blade Runner happens to be one of my favorite movies and I can’t wait to get my hands on this set, the only question is that will it be better to buy the blu-ray version over the DVD version as I doubt I will buy a blu-ray player but will have a PS3. Will it be the same audio/sound quality as it would be coming from a stand alone player. As I want the best quality for this class movie

Thanks!