Going on 4 months using the Joye 510 atomizers. I rotate three of them. One in use, one drying out, one dry and ready for a change-out. I never store them moist.
Other than draw and differing coil resistance, all vape about the same. One gets cherry red when I do a dry (and I do mean DRY) burn and has an easy draw. Two get dull red and have a harder draw.
I was worried WRT the many posts about atomizers dying, so bought a bunch when I started. Most sit in their wrappers, waiting for their siblings to die so they can claim their inheritance.
In my experience, poor vapor production is the result of flooding. *Reduced* vapor production is the result of starving. Burnt vapor is the result of extreme starving.
The difference between poor and reduced? Poor vapor has lots of flavor but little aerosol. Reduced vapor has "normal" flavor and little aerosol. Burnt is just plain burnt.