That's sort of my concern, if I'm going to drop another $50 on yet another organization, I'm hoping it provides more value than a magazine subscription... yet so far all I'm reading about either organization is vague 'benefits' descriptions with no substance.
NAFI talks about promoting the flight instructor. SAFE actually promotes the flight instructor.
Right now I'm mentoring a new CFI, the connection made through SAFE's Mentor Program. We've had a few good conversations which allowed him to easily pass his first CFI job interview, and now he is a working, full-time, CFI. I have openings for three more SAFE members for being mentored.
Because of SAFE's latest symposium on changing flight training, there is now a combined private/instrument certificate course and checkride for part 141 schools. Several flight training organizations have made their syllabi available to everyone for free. My company, Qref, made both our syllabi and our Checkride Checklists available due to the symposium, see
http://www.safepilots.org/public-documents/.
SAFE has far better flight instructor insurance than the fake stuff offered by NAFI. I'm no fan of Falcon Insurance after they denied a flight instructor claim, despite the claim clearly being the flight instructor's fault. Why bother having instructor insurance at that point? SAFE insurance covers Single Engine, Multi Engine, Sail Planes, Sea Planes, LSAs, Standard and Experimentals. You can get coverage for instructing in VLJs and other jets as well.
There are several other committees and programs one can be involved in through SAFE. Some are assisting the FAA in re-writing the training handbooks. Others assist in re-writing the Knowledge Test Questions. There's programs to revise the PTS, regulations, and more.
When CA decided to remove flight training's exemption from the "all instructors must be colleges or universities" regulation, SAFE stepped up to the plate immediately, brought AOPA on board, and with NATA, finally got the exemption reinstated. When AZ tried to do the same thing, SAFE members filled the meeting, and AZ backed down. We heard nothing, not even a press release, from NAFI during the initial, and most critical stages of organizing the opposition for either state.
I left NAFI during the debacle, and am a founding member of SAFE.