I love this tank!! I have aspire tanks I have Arctic tanks kanger tanks and to many to list!! I also have multiple trip tank. And I prefer my tri force over all of them.!.! The coils are great I see a lot of comments about "bad coils". And I have had an issue here and there. But every time it was a small easy fix. 9 out of 10 times its only a matter of putting the leads in the right place.