Just received my first DSE901! Got the pink one from Cash. I have been using strictly pen styles for 3 months now. The mini is so cute, especially since it's pink and with a pink light. I just love it. It produces loads of vapor. Takes some getting used to though. The cartridges don't last nearly as long, so I refill them a lot. Also there's a tiny hole on the side of the atomizer which I keep covering up by mistake with my finger. It makes a little bit of a whistle sound. I do like the silence of my pen styles and the fact that the cartridges last longer. I was tickled pink (sorry) to get this little beauty and it's great to show off with. An added bonus, part of the proceeds are going for breast cancer research, which make me feel justified in buying this new toy. Wish I could get a pink pen style though.