The short and sharp answer is do a masters because you want to do a masters. It isn't going to be a golden ticket, working hard isn't going to be a golden ticket, staying within a company isn't your golden ticket, experience in double figures isn't a golden ticket.
Work isn't set up to offer you advantage, it is set up so that you can spend YOUR TIME making SOMEONE ELSE lots of money. Remove the mindset of "what can please others" to "what pleases me, regardless of what effect it may have in others". There is nothing that will make you more successful than confidence, and looking for ways to make yourself more palatable to others isn't the way to get this.
valid points mate. are you a graduate? do you hate students?! lol

