Hey guys ! OK so as far as conductive vaping goes, the SEEGO Vhit Type C is a real winner !! For oils, wax, and shatter. All dabs, etc. It's got all servicable parts with no glue, totally cleanable. Glass dome. Replaceable coils have only burned out once on me in almost a year... they're totally cleanable too, in an iso tank. Hits great, HUGE clouds. I have it on top of an eGo v-v3 Multi-Voltage Digital Battery set at 4.5v . In my opinion 3.7v, the voltage of some smaller batteries, is not sufficient. Easily reloaded. The only possible pieces to 'wear out' are the O rings, which are obtainable. However , for those SEEGO Vhit Type C users out there, I have a question. What SIZE are the O-rings. So I can order them bulk wholesale. Not that they're ever a problem, never had one break. Friend had one break. However they do get looose over time and can slip out of the grooves. Easily repairable, just slip them back into the grooves, and there u go ! If they're too dirty u need to clean that part of the unit, easily , with a short iso bath (jar with %99 Isopropyl Alcohol) I'd appreciate any and all comments about the O-rings, and, in general, about the Vhit Type C. Highly Recommended ! The Glacier seems cool, but, it has a 'screen' which clogs up easily. Thinking of drilling a hole into it. Glaciers have no o-rings and therefore I guess would last forever. Cheers!