I have decided that I am willing to spend a decent amount of money on it.
You mean an indecent amount don't you? For $500+ you can get two excellent vapes and have $ left over. But if these two are your choices, the Volcano's the way to go because the Super Vapezilla is an electronic failure waiting to happen. Digital is much more likely to fail vs. analog and the Vapezilla has no parts warranty, so you're looking at $200-250 if the controller (any part of it) craps out. The fans are also noisy enough to hear in the next room. You've got to cool the unit down too, before shutting it down. You can't just flip a switch when you're done and walk away. I wouldn't use this vape if they gave me one.

You haven't by any chance been looking at one of their fake review sites, have you? Wicked Roots is a good name for Vapezilla's company-they're wicked to the roots. There are no legit review only sites, only user reviews on forums like this. For info on what people in the know are buying, check out the fuckcombustion.com and marijuana.com forums. Lots of good info on those, as well as here.

You're also considering a forced air whip vape vs. a bag vape-two totally different vapor delivery systems. Bagged vapor is consistent. You have a steady temp, steady air flow-every hit on the bag is the same. With a whip vape, you can get much more concentrated vapor-better taste, higher volume hits, vapor wise. But not all the hits are the same and you determine the air flow, even with a fan assisted vape like the Vapezilla. So there's a learning curve. People who enjoy the vapor experience usually end up with a whip vape. If you want both systems, get the Extreme (arizer.com/). Actually, you get all three-forced air whip and manual whip as well as bag. It's the biggest selling vape of the year.