I'm not that familiar with all of the different support groups out there except AA, NA, OA, ACA, etc. and Rational Recovery. I am a member of AA and have found that it fits  just about any foot that is willing to honestly give it a try. I hear that not all shoes fit the same foot in relationto AA; I however do not look at AA as a one sized shoe. I see it more as a shoe that fits many sized feet. I believe that most people will find something wrong with just about anything, if they don't want it to fit to begin with. If they can find something that works for them just as well, I'm happy for them and hopes it continues to work for them as long as AA has for me and countless others. I'm not a Big Book thumper. I see it as a text book of suggestions, not absolutes; which is why I believe that it will continue to be around long after many others have come and gone. I can see where it can be an issue for many. But I also believe that it is the principles and concepts more so than the verbage that makes it a simple program if one is willing to put aside their rigid thinking. We don't talk today the way they did when it was written, but the principles and concepts still fit as suggestions to a sober body, mind and spirit, regardless of gender, faith or beliefs. If something comes along that is just as good I'm all for it. The more people that are getting well and staying that way the better we all are. I will continue to look at the other new programs with an open mind. I know what is working for me and am satisfied with it.