All I can say is that Drs Posner and Hoffman are both top notch !! their f/u is also the very very best.. I don't believe that Carruana has good followup at all, but, that is what I heard... I have never been sorry for for sticking to this group at all.. they are very thorough.. You may get it done quicker with Carruanna but that is because the BGH group is so very thorough... The difference between Hoffman and Posner is personality only..but, they are both very carring and brilliant.. I can't say you would be better off with one or the other..One experiance I had regarding emergency care was about 1 year ago, I had a sudden stomach flu... I had never thrown up with the band.. so I got scarred after vomiting.. I called Posner's office at 5am... and apparently Hoff was on call for that weekend.. He called me by 5:15am... Now, if that is not good followup emergency or just plain followup care , I don't know what your nutritionist is talking about.. Everyone loves Hoffman and I think he may be more forgiving personality and Posner is stricter regarding lots of things e.g. pre op diet, etc... but, he kept me on my toes and I would never change... good luck and let me know how you make out..