I know I am a little late getting in on this conversation but I have had a SD for just a couple weeks and love it. For a 3.7v device, it vapes great and I love the button placement. It just seems so natural to use. I don't know about anyone else but I almost always have at least two pv's with me at all times. I use the 900mah batteries in my SD and have yet to go thru more than two in a day. I do also have a high voltage unit that I like very much but always have the SD right beside it so I can switch back and forth. One last thing. Thanks to keef for the advice on another thread. I appreciate it.
