I got my setup from LeLuv. I’ve never tried disconnecting the hose, although it has come off on accident a couple times and it held the vaccuum for at least 5-10 seconds while I hooked it back on. It also holds vacuum while the pump is hooked up so I never had to work the pump handle to maintain vaccuum.
The first cylinder I got from them (a 1.5) had a ridiculous internal flange that dug into my shaft painfully. The flange was about 3 mm, and it wasn’t sharp, but it was thin enough and not rounded off enough that it was painful under expansion. Imagine putting a washer that fit well around the base of your flaccid dick, and then pumping, and having the washer dig in as you expanded to erect size girth. That’s pretty much what it was, hopefully it makes sense, and I have no idea why anybody would ever design a pump cylinder like that. So, I ended up sanding the internal flange off, and now the cylinder works great.
But before I sanded it down, I tried ordering the next size up, so I have 2 cylinders from them. This second cylinder was perfect (it was a 1.75). It has a very slight internal flange maybe 1 mm tops, and it is very smooth so there is no digging into the shaft. Unfortunately I need another +0.375” girth before I can use it.
The pump I think is cheap, but it’s made of metal, and it’s always worked, and I have nothing to compare it to. I think it’s good for the price.
So there might be some variation in their tubes. Customer support and shipping were A+. It took me a couple hours to sand down the cylinder by hand, but other than that time investment, I love the tube. And the second tube was great out of the box. For how cheap it was, and considering the internal flange I got was maybe an isolated incident, I’d recommend them.