ok, yeah i need xl for sure. i read that the 35mm is too short. i vape 50/50 but i just ordered some juice from fusion which i believe is 35/65. more vapor isn't a must, just would be nice. of course i'll be picking up a mod soon. haha vaping worked for me so i might as well get something nice down the road. yes they are 3.7 volts so i know 1.7 will be fine. does it hit harsher or just warmer?