If you are looking for a really cheap tank that is great, look at the Smok VCT. I have an Atlantis, Atlantis 2, and Arctic and would say that, for the price, the VCT/TCT (they have interchangeable coils) is likely just as good holds 5ml of liquid (have been seen them online for 22$ or less). I also hear great things about the freemax starre. Then again, as mydget23 just pointed out, new tanks are coming out, you may have to wait to see how they work although they look really cool (e.g., Aspire Triton and Smok TFV).