I received my SB last week and have not really put it down yet. The size was a little intimidating when I was watching video
reviews but the overall customer satisfaction that I was hearing from everybody was a deciding factor in making the choice. Once it arrived, and I had a chance to hold it, the size is not an issue for me at all. Actually, the size is one of my favorite parts about it. It feels really solid, the button is just great and it is not easy to misplace like my super-minis were.
The fact it will run dual voltages was a must and though I wasn't sure about 6 volts, once I tried it I understand why some people never go back. If you are considering it for you first mod, go for it. You will not be dissatisfied with its performance at either voltage. The size should be the only reason you might not like it. Many have said that once they held it they were not bothered though.
Regarding the customer service, AltSmoke rocks. They shipped very quickly. I had a small issue with an adapter, emailed them with a question and had a response in just a few hours from Rob. They have a good reputation and I can see why.