26 male smoked for like 8 years, switched to e-cigs early this year.
Just recently switched to cotton and if anyone is new to ecigs from regular cigarettes I highly recommend it. Your lungs are used to drawing on cotton and you'll make the transition much much easier. I had some headaches using silica but when i switched to cotton they went away immediately, wish I woulda made that connection sooner than I did. lol.