I currently have a kanger MT3 which I love. I am in the process of ordering more along with replacment coils. I dont know what ohm to select for the replacment. What difference in vape will I get with each 1.5, 1.8, or 2.2?? I am using a ego-c 1000mah batt. Thanks in advance for any help!! I like a tighter draw with good vaper.