[FivEawE]

Hello, I am looking into buying a new ereader. I currently have PocketBook Basic2, which is terrible (build quality, materials, software crashing). I have looked into 2 ereaders so far, and those are Kindle Oasis 3 and Boox Poke 3.
I really like the form factor of Oasis. I like the two physical buttons to swipe pages, fast page swaps and the warm light. The disadvantages are that it is really expensive here (330 € for the 32 GB model), it is mostly out of stock and there is no epub support.
Boox Poke 3 on the other hand is cheaper and available. The page swaps are blazing fast and it supports epub. However, it runs Android which, security wise, is not that great in my opinion. Also there are no physical buttons.
Most of my ebooks come from HumbleBundle. I read mostly programming books, which have a lot of pictures and code snippets. An ebook is usually 20-70 MB large. Since I am outside of US, I doubt I will use Kindle Store that much (though I might use it every now and then). I also read various documentations on the internet. I have no problems of converting between formats or manually removing DRM if it is needed.

For me, the ereader must have:
Warm light (or the least amount of eye strain)
Fast page swaps
Easy side-loading (preferably through a cable)

A nice to have things are:
Long battery life
Buttons for next/previous page
Epub and PDFs
Displays code blocks nicely
A web browser
Firmware updates for 2-3 years
Easily read in bed
Operable by one hand
Automatic brightness and warmness adjustment

I cannot decide between those two, though I am open to any other suggestions.
Thank you very much in advance for helping me out.