Just wanted to post a little heads-up for any beginners searching for a cheap alternative to an expensive cylinder.
I ordered a LeLuv cylinder awhile back via Amazon, thinking that a mid-level price range would offer a decent tube. Not ashamed to admit that I was totally and completely wrong. I've used it a total of 5 times, each w/a lessening degree of success. What started as a small crack at the base of the connector quickly became a series of cracks down the length of the tube, ending up in a near-total break. No pressure above 5hg, the tube was handled well and always cared for. I guess you get what you pay for :/
Maybe someone else has had some success w/this brand, who knows. All I know for sure is buyer beware.