plain and simple the volcano crushes all
The 'cano is a great vape, but in what respect does it 'crush all'? Vaporization is a simple process and many vapes can do the job equally well. I've owned a dozen different models, from the VaporGenie to the herbalAire and SSV. I've used the 'cano but haven't bought one. I don't see the need. I've compared one directly to the herbalAire, and if anything, the herbalAire is more efficient. And I'm not the only one with that opinion.

tried those cheap ones in head shops from the super vapezilla to the vape pipes.
Since the SV costs more than the 'cano Classic I don't know why you'd use "cheap" and "super vapezilla" in the same sentence. Aside from the Vapir products and their plastic shells, where you need to do a 'burn in' to get rid of the plastic taste/smell, I've found that most vape owners, myself included, have no issue with "plastic taste or rubber taste". The Vapolution, using the 8" glass AIW bowl, has an all glass vapor path. Air goes into the glass heating chamber, gets heated (from outside the chamber), travels out through the AIW bowl (no screen), and into your mouth. What could be cleaner than that? And yet I can tell no difference in taste between that unit, which I've owned for 2 yrs, and my SSV (despite the tubing) or herbalAire.

And as nice as the Volcano is, it can't compete with a good whip vape for rich vapor, as in higher vapor to air ratio. I find a bag unit very easy to use, but boring compared to the whip experience.