Both unit excels in a specific use scenario.
If you are going to be toting your vaporizer around in a pant pocket all day long; then you want the inhalater no question. It also makes a great car vape because there is no constant reloading of stems or anything like that to distract you. You can walk around with it preloaded, waiting for a quality 15 minute vape break whenever you so desire and you will hardly even notice it there. Plus the USB charging port makes it easy to charge anywhere.
But if your going to always have a bag with you when your out with your vaporizer, or somewhere else to store it and don't mind the extra conspicuous aspect of the glass straws, then the Solo provides a slightly better vaporizing experience than the Inhalater. Not by much, but you can pull much longer hits of off the solo. It's also better with a waterpipe.
The flavor of the units are about on equal levels, though not the same. The taste on the inhalater is incredible at low settings, and quality bud tastes like candy. But the load is bigger, so you are going to have to deal with a steadily worsening taste as you move up to the higher levels. With the Solo the load is small so you will move faster through that spectrum of taste but still get several fresh hits as you reload a couple extra bowls.
So I'm going to cast my vote as equal, but because each of them serves a specific niche of the portable market perfectly and one is better than the other depending on the particulars of the situation.
