My DID is supposed to be here tomorrow so I will be able to give my opinion of it by this weekend. I also ordered one of the ibtanked pyrex tanks for it, but I haven't got a shipping notice for it yet.
I love my real DID, it's pretty airy, a lot like my ZAP, not quite as airy as that though. The wick hole is huge. You can get around 120mm in there in a solid wick if you roll it really tight. It does seem like the flavor is more intense from the Cobra though, I think it's because the air hole is smaller and the draw is tighter. Flavor from the Did seems similar to my Aga T+.