Here is a picture of a Joye 510 atomizer, that is relatively new and has only been used for about one week at 5 volts.
This is a Joye 510 after 4 months of use at 5 volts with regular cleanings
This one is a 4072 pen-style used for a few days running at 5 volts.
And here is a Joye 302 pen-style atomizer that I burned out running it at 6 volts for about a week. Not the atomizer's fault, IMO 6 volts is too much for any atomizer made today. It still works but at 15.9 ohms, it is hard to tell if you are getting anything or not. I like the Joye 302 pens-style atomizer best out of all the pen-styles. But as you can see above, this is why I love the Joye 510
I took these readings using a calibrated and certified Fluke multimeter