1. Have you used a penis pump? If so what did you think of it?
I used one years ago out of curiosity and insecurity. I thought it was an uncomfortable novelty. Startled to discover afterwards that I could leave a hand print on my cock like it was made of clay.
2. What benefits have you experienced by using it?
The only benefit was I found was the satisfying of my curiosity, my insecurity took longer.
3. What is the best penis pump you've used?
Being unable to find one big enough should have been a clue I didn't need one. I built a couple myself because I got a donut ring between the head and circumcision scar with the first one. It filled the tube and nothing else got bigger because it also cut off blood flow to the head. The next one allowed room for my curve and head to expand.
Definitely recommend offering one with a pressure gauge!
I remember looking at myself in the bathroom a couple hours after pumping as I discovered the pump had turned my knob into a wide-angle spray nozzle and thinking, "Any woman who sees this is gonna be thinking 'What the hell is wrong with your dick?'"