Yes I have, but I have a lifetime supply of everything so I will stick with ss mesh.
Great to hear your having success with the #500, so much better than the #400 for sure.
Have you heard about the Solid porous ceramic wick being discussed or at least mentioned:http://www.e-cigarette-forum.com/forum/modding-forum/330407-500-ss-mesh-51.html#post7290693
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