I have used .3, .4, and .5 for a few different builds. I was watching n.devine83's razorback video on YouTube and he was using .2 ribbon for it. Then I got to thinking about using .2 for really wide framed Staples and fraliens. I thought it made sense because the smaller ribbon should cool down faster and ect. However I heard n.devine say that .2 has a reputation as a bad vape. So do any of you guys have experience with .2 for builds with ribbon cores? I may want to make a razorback fralien in the future, but for now I only use ribbon for the core.