I'm a psych grad and the MMPI-2 is probably one of the most widely used personality tests out there.
I don't recall Meyers Briggs. Could be I just forgot. At first glance it seems very generalized. Like you can almost replace the 4 letter acronyms in with "pisces, gemini, capricorn, etc, and it would still work. But what do I know. Like I said I never heard of the thing. Do you know what the testing parameters are? For example, the MMPI has 300+ yes and no questions that correlate into various personality tendencies.
Are you into psychology? I remember I took an undergrad class on personality theory, but wasn't crazy about it. Think the prof could have done a lot better job with the course though. Social and clinical were always my interests, but now that I'm getting older I'm getting more into Industrial/Organizational. Yeah, guess I sold out, lol.
