Hi, Gugliermo,
I have never used the Jes Extender or the Autoextender, so I cannot comment on that. The only think I have used for about 3 months was PeniMaster. Well, forget about the myth that one can wear the device for 8 hours a day according to the advertising. Unless you have a glans that is at least 20% bigger than your shaft, the rubber strap will slip over your head and that’s “ouch”. I had to tighten the rubber thing really hard in order to prevent slipping, and this caused dark blue, could glans. So I have never be able to where it for more than 30-35 min. in a session. If you have to run to the bathroom every 30 min. massage the dick and after 5-10 min. put the PeniMasterMaster again it becomes obvious, that putting on and off the device must be the only job you have to do. Forget about the 8 hours, the best I could do on a single day was about 3.5 hours and that means I spent 6 hours of my day in nothing else, but running to the bathroom every 30 min. for releasing my poor dick from the torture.
Saying all this I should mention that the idea of developing such a device was excellent, the only and the biggest problem is the attachment. By the way EVERY device on the market - Jes Extender or the Autoextender, BIB, just mention, has the same problem - ATTACHMENT.
About 3 weeks ago I bought the GripSustem (https://www.thegrip.com ) and try to hang with it. I could say this is the best pool my dick have ever experience (0% skin stretch), because the attachment grabs by the head through vacuum and affects directly the internal structures of the penis. Jet, the attachment is the problem again. With this system it is impossible to hang more than 10 lb. (far away from my max hanging weight in SO – 22.5 lb) it is pain, not just in the ass. The system is good though if you decide to hang with really low weights – 5 lb. One can probably hang the weight for up to an hour. (I tried for 50 min.).
Lately, I cam to the idea to use my PeniMaster and to attach to it the Vacuum Camber of the Grip System instead of the rubber shit, so to say to use the PeniMaster without having problem with the circulation. It worked great, but after the first session the supporting surface of the PeniMaster broke (I knew it is about to do it – there was a visible crack in it). Yesterday I sent the part for replacement – there is a 3 years warranty on the PM.
So I will keep you in touch how is everything going. For now I do just manual stretches.