Well, I have tried the Kanger Protank 2, the Protank 1 Mini, the iClear 30 and the iClear 16. I guess over all, the iClear 30 and 16 has given me the least amount of troubles, but I quickly learned how to rebuild the Kanger heads with micro coils and cotton, so my ultimate vote would be for the Kangers, but the quality of the stock coil heads has gone WAY DOWNHILL lately. So, unless you are going to be rebuilding your coils, I'd go for the iClear 30 or iClear 16. Cheers!