I, too, am happy with my SD. I managed to burn out a circuit using an 801 adaptor, so I had to send it back to the Mothership for repairs. Trog repaired it the same day as he received it, and mailed it back that same day. Wow. Simply wow. (Needless to say, I've given up on the idea of an adaptor and will content myself with 901 atomizers.

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It's simply amazing to have batteries that last so long. I mean, I love my Dura-C, but when I go out and about with it, I have to have a handful of batteries with me. With the SD, I take an extra battery with me, but I have yet to need it, even after 6 hours.