All the devices you listed are adjuncts. They help. OK, you want specifics, here we go:
Penimaster - Over a long period the Penimaster can create length on its own, but it take longer that way than doing it manually. The device can’t get as strong a grip on the inner penis structures and you can with your hands. Plus, you have to remove it at least every 60 to 90 minutes to restore circulation to the glans. Plus, it isn’t as easy to hide under your pants as they lead you to believe. Our member jcloud has used the PM almost exclusively for PE. Send him a private message for advice.
Pumping - Avocet8 is our lead pumpmaster. He says he made gains by pumping alone. I see the pump as an added attraction to other methods because, like the Penimaster, using it alone for gains would take longer than manual methods. Pumping is fun and it’s one of the few PE “exercises” you can do fully erect. But gains via the pump do not come quick.
Cable clamp - Cable clamps are fairly new to the PE arsenal of devices. I think the jury is still out. Incorrect usage is very dangerous and, in my opinion, this device will injure you quicker than anything else we use. Timing is important, 10 minutes or less with time between sessions to restore circulation. Used mainly for girth gains, it’s a modernized Uli Thing (search for it). Ulis themselves are an advanced exercise that someone just starting out should not attempt. They put tremendous pressure on the penis and make it very easy to hurt yourself.
Power-Jelk - I bought a PJ as my first device and haven’t used it since the third week. It’s awkward and you can apply more pressure than you intend and easily injure the dorsal nerves of the penis. It doesn’t work well when applied “sideways” which would be the preferred method since it squeezes the corpora cavernosa without involving the corpus spongiosum and dorsal nerves/veins. It can make your hand just as tired as doing jelqs manually and may not give you gains as quickly as doing it by hand would.
I understand your frustration with the answers you’ve gotten. Please remember that we’ve been at this a while, have tried the devices, had our own experiences as well as read those of hundreds of other members and we know how to counsel newbies. No one is making fun of you or think you’re too ignorant to understand and no one is trying to put you or your ideas down. Try not to be as defensive in your replies and you’ll end up with more helpful, knowledgeable PE friends. If you reply with “attitude” you may not be a member for long.
That’s not a threat, not even a warning. It’s just the truth about how guys behave around here. We share our experiences and all learn together. You’re quite welcome to join us in the many different discussions that take place. Just try not to react to perceived insults when none are intended.