Well first of all thanks for the input. I'll check out how the socionics version compares to MBTI.
I guess I'm wondering why, for example, my Ni and Fi are so high and my Si is so low. Not that I have to match up perfectly to a textbook INTP, but I would expect my "shadow functions" to be relatively poorly developed, and would also expect my Si to be a little more developed. My brother who could be an INTJ may have had enough influence on me to kick up my Te and Ni, thinking back on it. He's a true armchair philosopher.
EDIT: It looks like in Socionics, LII (INTj) is actually the equivalent of INTP in MBTI (Ti->Ne)? And ILI (INTp) is the equivalent of INTJ(Ni->Te)? Am I wrong? If not, why is it reversed? Regardless, after looking at both of them, ILI seems to describe me far better than LII, particularly when it comes to how I perceive time.