Got my DB last week and haven't fired up the bong since, which has to be the true test of any vapo.
Shipping took about three and a half weeks (to the Netherlands), but considering the shipping cost was very low ($10 or so), that's perfectly ok. Packaging was fine, and everything survived the trans-Atlantic trip. The included bag is BUD-UGLY (no pun!), but - hey - it was included, so who cares.
Stuff I ordered with DB: one of the 'ice chamber's (about $65, which is a bit steep imo - I could personally do without any painting on it), extra stir tool, 3m extra tubing (for fuckups and 'experiments') and 10 extra screens.
I have to say first impressions were not entirely positive. My DB has a slight wobble because the rubber feet aren't exactly matched, and the fact that the glas cover actually freely turns over the ceramic heater made me a bit nervous. Until I realized it can't not, so was designed that way - and actually, it's pretty handy when sharing the whip, for it reduces the chance of pulling out the whip, since it can turn left and right a bit.
Material quality is great! The glass connectors feel very high quality, the ice chamber is a solid piece and the tubing is nice and 'fleshy'. The whole thing with the ice chamber attached looks pretty good too, although the DBV logo is pretty tacky, which isn't worth mentioning really. Just don't lose the stir tool in the couch, since it's extremely sharp...
A word on the instruction leaflet: it's very clearly written, and I think a beginner would find it easy to get started with the DB after reading it. Not a trivial point imo.
I tried DB first without the ice chamber and got pretty much what I expected (I've had a Vapor Brothers for a couple of years): strong hits on a nicely filled bowl, less so with small loads. I tend to vape at high temperature (about 2/3 to 3/4 on DB) and blow out a load on the first few hits, with stirring doing very little afterwards. It wasn't until I hooked up the 'ice chamber' (which is really 'just' a bong) that I fell in love with this little beast! Vaping through it is just so much more comfortable: the vape is cooler, there's no chance of any debris hitting your lungs when drawing (something which happened a couple of times with the Vapor Brothers) and, maybe best of all: it really is just like toking a bong, but without the actual smoke, which makes the permanent switch from smoking to vaping a lot easier, and more fun.
On the minus side: the ice chamber doesn't really moisten the vapo, in my experience, so I still get a soar throat from drawing dry air. But I'm confident that experimenting with temperature, draw-speed and actual fluids in it will help, and I highly recommend getting one, since it simply adds so much to the vaping experience.
A week on, I'm very happy with DB, and I have every confidence that it will keep me happy for a long time to come. The DB was a late-comer on my shortlist, which included the HerbalAire, Arizer Extreme and the Volcano. After deciding to forget about balloon vaping altogether, it became a simple choice. I like the DB for what it is: a lo-tech (a good thing, not a bad thing imo!), high quality vapo with a solid manufacturer (they've been around for a good long while) behind it, at a very reasonable price.
Posting this review on other forums too, fyi.