I'm going to be taking the official MBTI through my school's career services. Up until now, I've used this site (which I believe to be fairly accurate) to check my personality type:
http://similarminds.com/embj.html
This website gives you your Myers Briggs Type (and percentages of each of the 4 subsets) as well as your Enneagram (with descending order of percentages of applicable other types).
My Enneagram type almost never changes. I'm almost always a type 4 wing 3 (this means that my type is 4, and my second-highest adjacent number percentage is 3).
A year and a half ago, I typed as a 6. But I take the test about every 3 months, and it's been consistently 4w3 for the past year.
here's how to read your results: http://www.enneagraminstitute.com/intro.asp
But strangely, my MBTI is not consistent at all because two of the categories are almost a 50/50 split. In the past year, I've typed as an INTP, an ENFP, and an ENTP. These are all intuitive perceiving types, so at least the NP is consistent.
So here's my challenge to you:
Do your types also change? What is your type right now? Do you think we'll have similar personality types, having the same personality disorder? Let's find out. Post your Enneagram number (with a wing if you have one) and your Myers Briggs type. Test again in 3 months, see what changes.
Today, I'm an ENTP 4w3.
Info about the 4w3: http://mindheart.org/junction/oldcj/ep/types/4/43.html
Info about the ENTP: http://en.wikipedia.org/wiki/ENTP