okay, I have used both of these tanks and they both worked well at first. After me changing the wick, head in both of these a few times they both started having issues. The kanger i was originally using on a sid and it would immediately have a burnt taste. I put another new head on it and same problem, so i bought the iclear 30. used on my sid at first, and then i finally got my nemesis. I have then been running my iclear 30 on my nemesis, and everything was fine until i put a nasty flavor in my tank. I then dumbed the liquid and put in a better flavor. Well still could taste the other flavor way to much because of how strong of a flavor it was, so i gave up and used my last wick i had at the time, and cleaned the tank. Very first hit tasted terribly burnt. I took a few more hits and it seemed like it went away, and then the burnt taste came back. I don't know why the problem is but i seem to have a lot of issues with tanks. If anyone could help me i would really appreciate it.