Is the dumbbell version of the chest supported row better because the bench doesn’t get in the way? And have you tried the chest supported row with a cambered bar?
You don’t want to overpull when doing rows : Tip: Stop Rowing With Excessive ROM So personally I don’t really see benefits to using a cambered bar.
I don’t hate the DB variation but mostly because they allow for more hand position adjustments
ty for your response 
I am finding the back is very complicated lol