I've also has a Vapezilla classic (single hole heating element) for a quite few years now and wanted to share my experiences.
I was a long-term habitual marijuana smoker for recreational purposes and was looking at a healthier option to smoking. I came across vaporizing online and decided to give it a try. I wanted whatever was top of the line at the time and after a little research (I was unaware of this forum at the time) it "seemed" that the Volcano or the Vapezilla was the best out there. I decided on the Vapezilla mainly because of the HTCC awards and Marijuana connosseur Jason King saying it was better.
It did take we a while to come to grips with vaping at first but after a few weeks I seemed to get the hang of things. The "high" seemed to be more up and cerebral, rather than the strong physical body and narcotizing effects I came to enjoy from smoking bongs.
Overall I was impressed by the performance of the Vapezilla. For me it took around 5 min to heat up to the desired temp and another 5 min or so to cool down. The first 1-2 hits seemed to be full of flavor but dissipated afterwards. The quality of the vapor seemed good, somewhat like a nice mist, thick at first and getting thinner after the first 3-5 draws.
The main drawbacks it seemed to have were the herb seemed to vape on for ever and it was hard to decided when it was time to discard the load carcas. The vape was a little dry at times not being water cooled. Also a few times after an extended session, 20-30 min, the vaporizer seemed to get too hot and would occasionally cause a little combustion of the herb. But after extensive use these problems were easy enough for me to figure out how best to use the unit for my needs.
Currently I'm in the market for another vape not because the Vapezilla doesn't work well enough but because it's old technology and I'm sure there are better vapes on the market nowadays. I'll probably get a cloud, or a WHV and water tool
Overall I think the device is a decent enough vape itself even if the price is way too high and the company might be a little shady.
I will add this has been my first and only vaporizer so I can't really compare it to what else is on the market.