I am puffing on my DSE610 right now. My first impression is that this is not an inhaling device. It is much better suited to be puffed on like a pipe. The draw is so easy, that I can't draw much longer than 4 or 5 seconds. This makes it difficult to produce much of a throat hit, but the vaper is fantastic. If you are looking to get a DSE601 for throat hit and to inhale vaper, look elsewhere.
That said, this is a very, very satisfying device, particularly if you have ever used a pipe before. It feels great in the hand with enough weight to make it noticeable, yet comfortable. I think this will fit very well into my personal harm reduction strategy to wean myself off nicotine (some day) because it is a mellow vaping device. Use it to relax and enjoy the flavor of your smoking fluid. Yes, you can inhale the vaper, but it is not a throat hit monster for me.
The flavor of included cartridges is hard to pinpoint. There is a tobacco taste and some sweetness, but also a slight musty flavor, as well. It is not disgusting to the point that it cannot be vaped, but also a flavor I would never purposely order.
For the price, this is really a wonderful vaping device. Don't expect Screwdriver-like hits. Enjoy it when you are relaxed. I have only been using it for 30 minutes, so I cannot comment on battery life, but I can see myself puffing it with an occassional inhale for an hour or so. Hope my impressions are insightful for potential DSE601 owners.