Well I am very tempted.

I have the Kobo Libra and also the Kobo BW with Carta 1300 screen. I prefer the Libra because of size and pageshift buttons.
But the Kobo BW screen is better than the Libra.
So the Era Lite seems to be the right choice.
Adjust of font weight is also very important to me. So I asked Rufus on Amazon DE this question:
Is it possible to adjust the weight of the fonts?
And I got this AI answer:
Yes, the PocketBook Era Lite offers extensive font customisation options including font weight adjustment:
Font Weight Options:
Multiple font weight settings from light to bold
Adjustable font darkness to improve readability
Custom font styles can be installed for different weights and appearances
Additional Text Customisation:
Font size adjustment with multiple sizing options
Line spacing control for comfortable reading
Margin settings to optimise text layout
Text alignment options (left, centre, justified)
The Era Lite's open system allows you to install custom fonts beyond the pre-installed options. You can add fonts with different weights (light, regular, medium, bold, extra bold) by copying font files to the device via USB-C connection.
One reviewer specifically mentions the display quality is "much clearer and not blurry/smudged at all", which suggests the font rendering handles different weights well.