I used SS mesh wicks for Genisis tanks for a long time. They have their advantages, but I found
ceramic to give cleaner taste. There's also the
chromium oxide discussion when it comes to stainless...
For styles of atomizers other than Genisis, there's no reason to use SS mesh, when
hemp or XC-116 braided ceramic work much better, do not have the faint metallic taste or the possible health implications of stainless. For Genisis, porous ceramic works great, but is difficult to manufacture; some people have had success with pure nickel foam (not me), or XC-116 (braided ceramic).