Your enneagram is interesting... I used to think I was 7ish 3ish 9... and then I found out that I'm a 6w7. I haven't seen many of your posts (1 or 2 here or there), but you're trying to decide between ENxP types right? One of the differences I've found helpful between these two is sincerity, ENFPs tend to ooze the stuff, while ENTPs more often play with it. Have you delved into socionics at all? It tends to have a stronger connection to reality than MBTI does, which can be very useful when typing people (despite that they are not interchangeable theories).