I am confused. What is the EV difference between a donk bet and a check raise? In which cases is it better to be donk betting and in which cases is it better to check raise?
This really depends on many factors.
This is the thought process though:
This is an important question. It's discussed on many sites and forums. I don't want to copy-paste the text as it would be my own, so:
HERE you can find the summarized pros and cons of donkbet and check-raise.
And HERE are a good list of the situations when to use them.
To understand the second link, You must understand first polarization. You can find info HERE about it.