I have just done complete re-write of an article I wrote about ten years ago comparing pochade boxes. It includes all the latest plein air equipment, including both pochade boxes and other lightweight easels and palette boxes.
You will find a complete list of every pochade maker and style I know about in the new guide.
Here is the new guide: https://www.virtualartacademy.com/guides/pochade-box/
….and here you will find reviews of all the pochade boxes: https://www.virtualartacademy.com/pochade-box-reviews/
If you have any plein air equipment yourselves, please add your review of what you like and what you don’t like about it in a new review section that I have built into this new guide.