You may like this pattern of starting all custom commands with a comma - benefits against a wrapper command would be shorter command names and built-in tab completion.

I found the My Deep Guide youtube channel to be a really good source of reviews when I was choosing an eink tablet, here’s a link to his 2022 roundup.

I went with a Supernote A5X around 2.5 years ago. My usecase was for college to take lecture notes and to read academic papers/epubs. I went with the Supernote over the reMarkable for the software support: I really like the concept of reMarkable’s Linux-based OS and being able to use community mods, but it felt like I would need the mods to have all the features I wanted, while the Supernote wouldn’t allow for modification but would have everything I wanted built in. I’ve been satisfied with the writing and reading experience, customer support is responsive via email and Reddit, and OS updates have been adding new features without a subscription.