You get an "Advanced" on your academic transcript and get to put it on your CV as well, but honestly marks > an Advanced degree. If you can do well without the advanced degree, you'll be fine. If you do the advanced degree and get low marks, you won't be better off. It's not heaps better for grad opportunities, but you'll have something that not everyone else has, and many of those can be the difference between getting the job you want and not getting it.