Just to clarify, though, a vaporizer is, ultimately, only a heat source.
Really. It's a heat source. that's all. All the rest of the bells & whistles are just extras. The heat is the main point. Heat, applied to herbs, produces vapor.
So, the best vaporizer in the world then, is a constant (or instant, immediate, or easily obtained), reliable, controllable heat source that works with how you want to use the vapor produced. If you want glass, you pick glass. If you want wood, you pick wood. If you are good with whips, you get something that uses a whip.
I like my ENano because it is easy for me to use, and I can use it a few different ways, with different stems, etc.
I own a VXL EVO. It's nice, too, but it's a bit of a bother to pull out and use, and it seems more like taking an elephant gun to a duck hunt. Mostly misses the point... and, flavor is meh.
I have a Hammer. I adore my Vapman. I love my ElevapeSV. They reliably provide heat, and a way for me to get the vapor from the herbs. They all have their perfect niche in my life.