What are the Characteristics of a NT Christian?

[Jesster]

I'd have to have some sort of benchmark to decern who was a true christian and who wasn't.

I'd say believing that Jesus is who He says He is, and striving to live by the teachings of Christ as depicted in the bible. 

I think that's as basic and fundamental as you can get. If someone says they are a Christian but then they say they don't believe that Jesus was the Son of God, I'd say that person's beliefs are not in line with Christian beliefs. If someone says they are Christian but they live a life of greed and hatred, I'd say that person is not living the Christian lifestyle.

This is basically how I always saw Christianity too. Even though this applied to me at one time, some Christians today still give me the "you weren't a TRUE Christian" response anyway. It's like nobody can make up their minds about this.