I just received my DSE-901 manual kit from Eastmall today (7 days shipping from China - not bad). First I have to say that I love 901's. I love the flavor, the feel of the unit and the vapor is good too. I've been using it for a couple of hours now and I really like it. There is still a cut off, just like the auto batteries, but I'm ok with that. I could never carry my auto 901 around with me because the battery would activate in my pocket ( OUCH!). With the manual, that won't be a problem anymore. I prefer it to my manual 501 due to the fact that you get the full flavor of the liquid and there is no burnt taste. The button is pretty flush and very easy to press. If I start having problems with it I'll let you know. But for now, I highly recommend the manual 901 and Eastmall.net.