As a fellow Denverite, I'll throw my hat in the ring here and say that, in my experience with both eGos and my iTaste vv v.3, my only consistently good experience has been the Mini Protank 2 (as well as some knockoff clearomizers utilizing the same heads). Contrarian opinion, I know, lol!
I'll caveat by saying that I can't stand plastic clearomizers (taste-wise), so my iClear 16/16bs and EVODs get almost no action (make for good loaners to my noobie friends, though, lol).
Tried the iClear 30, and didn't really fall in love with it, though I haven't really tried to (I think I've only burned one or two tanks full at this point - just not feeling it...)
I have 2 Aspire ET-Ss, and an Aspire mini Vivi Nova-s (all BDC), and I loved them at first. But after a few weeks, I can't get them to work. At all. I have no idea what's going on, but now they flood non-stop, and even leak when sitting in a stand. Flavors can be VERY muted now (again, no consistency - one day they will be fine, the next, nothing), and they like to throw in a burnt taste intermittently with no apparent source (no amount of cleaning or priming will remedy) - one hit will be fine, the next hit burnt, the next fine, and so on (again, letting it sit or priming doesn't seem to make a difference). I've cleaned the heads every way I know how (boiling water, alcohol, efferent, dry burning after removing the cap, you name it), and even taken them apart (the coils do gunk up fast, it seems) to get at the source, but can't seem to find a fixable problem. I want to love them, based on my initial impressions, but I can't…
The mini pros (just picked up a few mini pro3s, which seem to work just as well as the mini pro2s) work straight out of the box, no leaks, no flooding, no dry hits, just solid, dependable performance with great vapor production and full flavor. The heads are cheap and very easy to clean or rebuild. I know this goes against what everyone else experiences, but they are the only tanks I've come across that I can recommend.
I've been trying everything, so those of you in the Denver area are welcome to stop by and try my now extensive collection of little tanks for the vv v3, lol… ;-)