Thanks for all the replies. I'm beginning to see the differences.
So the focus of Kroc rows are simply to get as much weight up in a straight line for as many reps possible, whereas for strict DB rows, the path of the DB is diagonal and done with a mind muscle connection so to speak?
Reason why I'm asking is that I came across this video of Andy Bolton talking about assistance exercises for the powerlifts:
Around 4:15 he talks about how people are using too much momentum and weight and advocates going lighter and pulling in a diagonal fashion to hit the lats more. And given that he's pulled over 1000 pounds I would assume he would know what he's talking about.
If these are purely a matter of personal preference then yeah, the point of this thread still stands, which was to find out if Kroc rows or strict DB rows were better for your deadlifts and back in general.
Or am I still missing something somewhere?
Nevertheless I will probably add Kroc rows into my routine as well. Thanks for all the input.