I'm a fan of Socionics, but not a fan of the Western hemisphere Socionics community (which is mostly online). Socionics really nails it with regard to intertype relations, which I have found to be very useful . Unfortunately, the Socionics community seems to focus on duality to the exclusion of all the other relationships.
I am EII, happy Delta. I especially like the concept of quadras.
I thought that Socionics wasn't supposed to directly correllate to MBTI though? If so, does it make sense for me to be an ENTP in both MBTI and Socionics? I actually think that the ILE profile on the wiki Costrin posted was a much better description of how I am than most ENTP descriptions I've read.
An ILE in Socionics is Dominant extraverted intuition, Secondary (creative) introverted thinking. This is the same function ordering as an ENTP in MBTI.
But there are a lot of differences between the two typology systems. For one thing, I personally don't think introverted sensing or extraverted sensing are the same in Socionics as they are in MBTI.
I am curious about all of the MBTI INFJs who are identifying themselves as EIIs. You are dominant introverted feelers? The differences between Socionics introverted ethics and MBTI introverted feeling aren't that vast.
All of the INFJs I have known would fit far more in Beta quadra than in Delta quadra. They always seem to value and utilize emotional expressiveness. I am not casting doubt on anyone's self-typing though. For example, my father is an MBTI ISFP and a Socionics ISFp (imo, due to key differences between the way sensing functions operate in MBTI and the way the corresponding information elements are used in Socionics).