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2clicker, well according to Inhalater that shouldn't be much of a problem anymore. Let's hope so.
I beleive a lot of people removed decals from early units because they peeled. This is not a problem anymore.
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Snake Plissken, I think I am one of a few that is actually going to receive v4 (which is actually being referred to as the Q3 release). I probably won't have it until next week (crossing fingers) but I'll fill everyone in when I get it. The sticker should no longer be an issue (see above) and the port will be fixed (machine cut) in the second Q3 release (due sometime in November I think). The temporary fix for the handcut ports on this first release of Q3 is to simple put a black sticker to cover some of the "cosmetic imperfections." Apparently previous models also had black stickers, so I think this issue is resolved as well, at least to me. Others are holding out until the machine cut models are released.
I can't comment on the flavor yet, but I'll post a review when I get mine. 2clicker has a older model of the XP and can fill you in on that, as well as many others.
I personally purchased mine from PlanetVape, but there is a list of official retailers on their site. The Ebay link is one of them. You could order one now if you wanted, but I'm not exactly sure if you would be receiving it now or with the second batch of Q3 units.