I've been using the ECA for about three weeks now. At times I've been thoroughly pleased, other times completely ...... off.
I have learned a few tricks with it. When the vape gets dry and burnt, I previously thought the coil in the head had gone bad or need a cleaning and/or dry burn. I destroyed about 6 of these $5 heads doing this.
I was this close to giving up on vaping a while back because of this silly issue. Instead I got the Vapeonly BCC, which works great at first too, but it seems to have the opposite problem, it floods for no damn reason and I haven't figured out a quick fix for that, hence why I'm back to using the ECA.
Just in the past few days, I've come to learn that the ECA's real problem (dry hits) is too much pressure on the tank. All you need to do pull the tank out and put it back in. You can tell because the tank is very difficult to pull out when the pressure is too high. No cleaning of head, "re-priming" the head, disassembly of head required. Then just do a couple non-powered drags/pulls/vapes after pulling it out and putting it back, and then bam, works like a champ again.
I'm down to just two working eGo-C heads for my ECA, and I think they're just too expensive for as often as I've needed to replace them.
BTW, don't buy eGo-C head clones (non-Joyetech). I got some from AquaVapor (good service, BTW) at $2 each, but they don't fit properly in the ECA and they are not repairable like the genuine ones.
Monday I took the plunge, slapped down a CC number for and iGo-W RDA, and all the accessories it requires (final bill was about $50). It should be here tomorrow. Kinda excited to build my first coil.