There is no efficient hanger yet. Maybe there will never be one. The structure of the penis is too complex to be pulled (with a noticeable force, at least) with anything different than your hands.
Vac hangers cause blisters and can’t stand much weight. Noose style hangers would be the best if the noose was very thick and soft - exactly like your fingers. Clamp style hangers don’t pull from the tip, the skin, ligs and smooth muscle will held most of the weight, without speaking of others issues; clamp style hangers are probably the most ineffective of them all.
If you have the belief there are better things than your hands to stretch your penis, probably the future of hanging for you is pumping.
I’m of the complete opposite opinion. I say forget the hands and go for a good compression style hanger and stretcher. I know from what I have read over the years clamping style hangers are very effective. I believe hands and pumps have tended leave the most people disappointed b/c their gains were very little to none. Of course some have gained big with hands and some with hangers. And many gain nothing. Often times lack of consistency comes into play when gains aren’t made but many men report not making gains after months of trying hands, hanging, or pumping.
ykm123321 is the owner of the gripping trainer website. He also surreptitiously posted here as LetsGrow123 in an effort to promote that site. Please take any product endorsements as very likely to be biased.