I have had it for about 3 weeks and got to say I'm impressed.
I haven't used it as consistently as I should but I have noticed harder erections since using it and a huge difference in girth right after use especially the head/tip, my girth gains right after use are a little more than an inch and about 1/4 -1/2 in length I use it for about 20min at a time but I start out slow and gradually build up pressure also a tip to get a good seal is to shave or trim very short, I trim because I'm prone to ingrown hairs.
The look on my wife's face was priceless defiantly brought out another side needles to say we are both happy with this purchase.
I paid $193 for the x40 and strap off ebay
you pick the model based off your size