To prevent discoloration, what I did was pump for 5 mins, stop, jelq and massage, then pump again. did this in cycles. Massaging between sets helps the blood flow and recover. Additionally, after you are done with everything, put a heat pad on your penis, even if you just got out of the shower.
My skin didn't cut, but it peeled a bit. I used lotion daily to strengthen the skin and neosprorin to heal it initially. Even when i wasn't pumping, I put lotion on.
I had to return the hercules because it was pinching the base really badly, and it hurt like hell for days. I'm waiting on the x40, and I emailed them recently and I was told it's delayed in testing, so it might not be out until Easter.
