The difference between the two lines is merely cosmetic, with very minimal/subtle difference in the exterior (almost hard to distinguish if not familiar with f30) and slightly more noticeable difference in the interior with noticeable different colour schemes in the trims and seats profile. So really, bro....as much as we want to help put you out of your "misery", I think only you will know the answer to your question. Different people have vastly different taste and likings, to each his own. Bottom line is, both the Sports and Luxury line are great and well thought out by BMW in catering to people with different tastes