i have noticed in most shops where you get the vape gear i see that the number of atomizers that are rebuild-able (especially the tanks) are becoming less and less available... now i think its great that noobs can get their hands on a device that is ready to use, the down side to this IMO is simply this .. if the FDA gets their way and we are going to wind up back in the stone ages as far as atomizers and the supply of pre-built coils will be gone... with these regulated mods , not mech mods my best guess is its probably near impossible to cause a battery to explode in the mod due to a improperly built atomizer , wire and cotton will always be around.. imo even if you enjoy using prebuilt coils i believe it would be wise to learn to build a coil and wick it , now if i am wrong i welcome any critique