I've been using one of these jet lighters for over a month, and it's probably my favorite. I love the huge plastic reservoir...no empty-fuel surprises. Only small issue is the size. Too big for my pocket, but not a problem with a traveldor.
However, be careful buying lighters off deal extreme. I bought a classy yibao (
http://www.dealextreme.com/p/tri-s-s...-gift-box-8052) and it had a defective valve. When sparked, the flame would grow higher and higher. Last I tried, it only took a few seconds to grow over two feet. I'm tempted to post a pic...but I don't want the valve to completely fail when I'm holding it.