Thanks!
For me Custom option with "Chars per page" seems to be best.
I set it to 1900 and it shows values very similar to physical books.
And I guess by using this value for every ebook it should be easy to realize how long is individual ebook in compare to other ebooks.
The downside of course is the fact that sometimes it shows one page in two ereader pages. Example: 1,1,2,3,4,5,6,7,7,8 [...]
But IMO it's still better like that than showing unbelievable amount of pages in books. Like: 300+ pages book as 500
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Btw. Are there any known bugs or reasons to not using custom option?
Would prefer to know it right now than after I change my whole library