Benefits of taking postgraduate/PhD-level courses during Master's During my master's studies, so far, I have taken quite many postgraduate-level courses (i.e. courses that are accepted as a PhD-level course for a PhD student at my university). Some of these courses were a part of my degree requirement, so I was obliged to take them, but few of them were my personal choices to take them. I am now wondering if this can be a positive point in the future in my CV, e.g. when looking for a job. In the transcript of records, it is not indicated anyhow that those particular courses were postgraduate level, except for a "P" in front of their names and that's about it, so even if I send my transcript to someone they probably won't realize those courses are PhD level courses. So was it really worth the trouble to take such courses which mostly took me twice as much time to complete? I am not talking about things I have learned from these courses, but merely talking about their benefit in the future when applying for a job or PhD program?
While it might make a small difference, I doubt that you will get all that much benefit from the courses based on how they appear on your transcript, even if they are annotated with information about their level.  The simple reasons for this are that:


Courses cannot readily be compared from institution to institution, and
Even a high grade in a course doesn't really say anything about what you took away from it.


Instead, the main "resume" benefit you are likely to obtain from these courses is in their side-effects: higher-level graduate courses tend to give you opportunities that don't come in more stock courses, like doing significant projects (which sometimes even lead to publications!), giving class presentations, getting involved in research, getting to know faculty, etc.  

Those are where I would recommend looking for benefit, and why it's often better to take less classes but invest more deeply in each at the graduate level.