I received my Vacextender package a couple days ago, and have been using it a bit. i am very happy with it, the comfort level is amazing, I can get a good strong stretch with it (equal to or slightly more than the highest tension level on the Penismaster spring indicator) without the glan feeling uncomfortable at all, which surprised me alot. I didn’t even know I had it on such a high setting until I started feeling the ligament being stretched heaps .
Initially I had some issues with the glan cover sleeve, but now has been solved, after reading the appropriate documents and making adjustments to the sleeve.
Right now I am experimenting with the ADS feature (around waist and around leg), and the waist one doesn’t work particularly well for me (the way its setup prohibits strong stretching, but is capable of giving light stretches, which I guess is what ADS is all about: light stretching for long periods). Will try the leg one today.
In my opinion, having used both, the VACext is better than the Penismaster, but please take my recommendation as a suggestion only. You should read around some more before you decide to buy either one, since they are not cheap items. I especially suggest you read the “complaining” threads, to see what issues either devices have, and possible problems you may encounter with either one of them.
Good luck.