I have noticed their seems to be considerable "bias" against S types here from some posters. I just read a comment about how some person couldn't be an "S" because "S" types lack "vision" and "creativity". I think that S v. N has nothing to do with intelligence or imagination or creativity.
For example, my girlfriend is an ESFX---she isn't dense (she is a graduate student at Johns Hopkins and is an Autism specialist), she just takes in information and communicates differently than I do as an INFJ. My best female friend is an ISFJ, and she is every bit as witty, well read and interesting as anyone I have ever met (she knows a little about everything), and both of them, as SF types, are extremely amicable and easy to be around.
The way I see the S v. N divide is more like do you make decisions based on hunches or abstract concepts vs. do you like to have cold, hard facts to make decisions on. N's tend to be a little more "eccentric" for all intents and purposes.
Another of my male best friends, an ISTJ, fits that type to a T (with an extra dose of J-ness) He is one of the nicest funniest people I have ever met, and his mind is sharper than a razor blade. He takes in everything around him (he observes events in a detached way, kind of like an owl) and analyzes it thoroughly. He always is wrestling with picking apart personalities and other things in his head. He has wide and varied interests, and a very colorful personality but like people with too much "J" he is also anal retentive like crazy. He is also the most successful of all my friends, monetarily, and he has 2 wonderful children that are being raised in a wonderful home. But he is defintely an STJ, not an NTJ.
I am just saying, these are three solidly "S" people that are very interesting people to me. They have very complex personalities, very agile minds and a whole lot to offer me, as an INFJ, just by sharing their thoughts with me.