If you are set on buying a Kobo, then you'd have to go for the Forma and read PDFs in landscape mode, which could work well depending on the the PDFs and your preferences. I have an Onyx Boox Nova 3, which is the same size as a Kobo Forma and can read most PDFs just fine in landscape mode; on the other hand I don't know how well this would apply to the Forma, since Onyx is better on both the hardware and software side for PDFs (faster processor, better customization options in Neoreader). I also crop the margins to zoom in on the text.
I seldom read PDFs, though. If they were my main reading, I'd just buy an Onyx Note (Air or 3). They are expensive, however.
|