I find the neck preety nice, and I don't see how it can be dangerous if you know what dose ur taking, and know what heroin it is and purity, and don't miss the vein, u should be fine, and it doesn't hit u instantly, just as fast as in ur arm..also im sure a lot of us have shot 5 units of air in the needle or a air spot, well in the neck make sure never to have air in that needle. my buddy who has been doing this for years , played a joke and put a tiny bit of air in and I suddenly grabbed my chest and lost my breath for a second, he told me to never have air or that can happen, I only did it small enough so u know how ugly it can get..im sure some wont agree with that. I trust him with my life. I have no veins so I have no choice, once in awhile one will come out, but I use a fresh needle each time. otherwise a needle used more than once makes it hard to hit the vein, it will wobble around. inject slow depending on how intense of a rush u want, ESP using product u never used before, I only use his product, I know how much I need each time.
the legs are dangerous too..i shot up in my ankle in a bathtub at a motel, and I believe I missed a little. had an abcess got infected with staph, they contemplated plastic surgery as the hole in my ankle was 4-5 inches deep. 3-5 days longer they would of amputed. my girl had hard bumps herself and we both have black scar marks. either it was stupidly sitting in a dirty bathtub at a motel with dirt, or the dope was contaminated..but in general avoid neck and legs...do it at ur own risk