Why don't you explain about yourself, what do you want to do and why. Maybe somebody can help if you actually say something about yourself. For your information, there is no xfamily organization to join.
xfamily is not an alternative to tfi...it's simply people who are 'ex' (used to be part of) tfi. if you're ex-tfi you are by definition x family...just as if you were a former alcoholic you would be an ex-alcoholic, etc.