The other day someone asked how much liquid people vaped. I think another pertinent question is - how much liquid do you lose through leakage? I am discounting @dannyv45 here - whose signature reads:"OH MY, I just unscrewed the wrong end of my clearo and it spilled all over me."
- though that too happens often enough. 
I'm more concerned with how much liquid we lose through atties, even drippers, in normal operation. I think the only tanks I own that do not leak at all are the nautilus, the Aspire K1s and the Kanger Mini Protanks. My Subtank Mini is like a sieve and I have basically retired it. The Kanger Aerotank is also temperamental and also tends to leak through the air flow holes when the mood grabs it. The Kayfun 4 is not bad, which also applies to the Lemo 2, though they are both not absolutely watertight . Even some drippers tend to leak, although the avoidance of just that is what made me get them.
What's your experience?
I'm more concerned with how much liquid we lose through atties, even drippers, in normal operation. I think the only tanks I own that do not leak at all are the nautilus, the Aspire K1s and the Kanger Mini Protanks. My Subtank Mini is like a sieve and I have basically retired it. The Kanger Aerotank is also temperamental and also tends to leak through the air flow holes when the mood grabs it. The Kayfun 4 is not bad, which also applies to the Lemo 2, though they are both not absolutely watertight . Even some drippers tend to leak, although the avoidance of just that is what made me get them.
What's your experience?