I have the sub tank mini and am quite new to the vape community (my outlet to get away from those terrible Newport shorts) but have grown fond of vamping and love it now. But back to the topic I purchased the sub tank mini 2 black and red version and noticed they changed the coils from the orig coil it comes with, I'm not sure if this actually relates to your question my clouds aren't as large Amy,ore but that's probably because the new coils only run up to 30w but I've noticed it tastes better and I'm running an 80/20 blend I purchase from avail vapors In the area I just moved to.