I've always used SS mesh wicks and they have served me very well. At the same time I've read many posts here by those who had a good deal of trouble with them. I've not had those problems myself, but these folks are clearly having the problems and can't sort it out. I'm not sure why.
I just roll my wicks from a 3 inch long strip of mesh, folded over on the outside end and well oxidized on both sides. I roll mine tight and coil them with 26 kanthal 5/4 wrap for .7 ohm and it works wonderfully well after I nudge out the hot spots with a dental pick, which is easy to do and doesn't take long. This wick goes into my RSST, which is a snap to build.
I've been using a Q-tip stick to wind the coil on, the plastic ones, they are just the right size. I wind the coil on it, silp that stick into the wick hole on the RSST, lock down both ends, pull out the Q-tip stick and slip the wick into it, twisting it as it goes into the coil in the direction it's rolled in, check for a hard short and ohms, then pulse it while working out the hot spots with my dental pick. This never takes long.
When working out hot spots be gentle, those coil loops get really soft under heat and will move with very little pressure.