Wow!! I started vaping the begining of Feb 2011 with a dse801 and I have always enjoyed it. However it is starting to show its age and it is starting to die on me. I decided instead of replacing parts I would try something new. Ive been looking at the 510 for a while now but have been hesitant due to its size. Mind you now Ive only had the 510 for a few hours but I am impressed and I will be continuing to use this style for the time being. So for anyone thinking about getting one I say go for it (just my two pennies anyway).