I'm new to diy and for a kit I bought their kit with some flavoring alot of things I have tried when tasted without nic or pg/VG just the mix diluted in water they taste pretty good when I mix up a batch for simple purpose I mixed with a bottle of 50/50 it comes with to find a recipe I like then make a 60/40 or so anyways the flavor seems to lack or is terrible I've let them steep for a week some longer and no change so maybe could be the concentrates any feed back would be nice but I know fersure I will be getting better concentrates to work with cause we all know premium starts from premium if anyone has used these let me once thanks