The Splendid Socionics Test
If I link you to this thread, it is because I currently consider it the most reliable way of "me" typing you: although of course the test is self-reporting and also, I only put the test together. I consider self-typing via such an analysis to be the most reliable method of determining your type, for most people, and do not consider my subjective impressions, (especially of people I do not know very well), to be so useful.