I had a couple of goes at unflavored but it didn't last long, however recently I loaded up a Reo again and its quite nice, it actually does have a nice flavor all by itself. Maybe there is something about the steeping? I offered some unflavored to my wife, and she thought it tasted too much like a tobacco. She only vapes menthol, so it seems the menthol is masking the natural unflavored taste. Makes you wonder how much flavoring it takes then to mask the flavor of unflavored, especially if its not a tobacco juice. I am now running at least one Reo unflavored, and when I do use a flavored juice, I'm diluting it considerably, from 25% to 75%. Sometimes I just drip a few drops of flavored in a Reo running unflavored, the remnants of flavor from those few drops can last for hours. Its ironic that I'm really starting to like home-made NETs as well as unflavored, but now the need for flavor is diminishing, the NETs I made (and bought) will last a long long time. Many thanks to Super X and others in this thread, and other similar threads in Reoville. I was just thinking to myself today how lucky I was to get an interest in Reo's and find Reoville, a wealth of good knowledge, good intentions and good people.