I've loved the Solo III since purchase June of last year. First time using the XL WPA I went head and used it how I've used the Solo II and Air Max in the past and packed it super tight. After a few good pulls, combustion. That's when I knew this heater was serious! Has never happened in my years of using the Solo II (then Air Max) with the same super packed method. After a good cleaning and some further testing, it has been my go to device! I don't pack super tight as often since the airflow is so great. Using my XL Hi-Flo straight stem from 420EDC is so tasty

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I've used plenty of vapes, but with how easy to use and maintain these Solo/Air devices are and how pure the flavors come through, they have been my absolute favorite portable vapes. Keeping and rotating my preferred stems across devices has been neat too. Reloading on the go can be a little tricky but pre-packing the stems and blowing out the ABV couldn't be easier. One to three stems while out and about usually get me where I need to be, but I will say I don't really leave the house or travel with any of this stuff these days.
Getting to the v2, I really dig it! I took up Arizer's offer of sending in the unit and paid $100 for a v2. I don't have my old Arizer's so really missed the S-III while waiting for the replacement. I can't call it an "upgrade" as it is 99.5% the same device, but the minor UI upgrades are nice. What really did it for me was the addition of PD charging and the new Sea of Green color. The matte color reminds me of how my old blue Solo II felt in my hands and the green UI is so pretty

. I don't know why they couldn't have given both colors the option to switch back and forth but its not a big deal to me. Additionally, nearly all my devices use PD charging and have magnetic adapters to help prevent wear and tear on the ports. Being able to use my existing charging setups as and where they are makes my life easier, so for me it was worth the upgrade. I appreciate that I am able to spend money on silly things that make me happy. It is a privilege I do not take for granted. I do hope my old unit isn't going into a landfill so it would be cool to know if it ends up being reused somehow down the line.
I understand $100 means different things in many parts of the world so I can't say that it is flat out worth the cost but if you like the minor changes and think the price is worth having a shiny new (and possibly green) device, it's nice to have the option to "side-grade". I have read some people are upset and consider the v1 a beta product, but I can't agree with that line of thought. The v2 doesn't make the v1 obsolete. When I bought the v1 I took the device for what it was, not what it could be. I have never been able to update firmware for Arizer devices at home, so I didn't expect to be able to do that with the S-III. Everything else has been a neat bonus. Shipping your old device (at your cost) and being out the device for a week or two while waiting for the free software update has it's own pros and cons but would have been worth it to me and I appreciate Arizer for having that option as well.
Here are two photos before I get back to using it and looking at neat stems online!