I think the only true painless way is N. As mentioned it's not an easy task to get a legitimate seller with the proper quality needed. SN is my plan. I have emphysema, pulmonary hypertension and heart failure. I've read through some of the completed CTB with SN. I do not expect it to be painless. I am now expecting breathing issues at the very minimum. If it were easy to obtain a true painless way there would be a lot less people on this forum and elsewhere.