muscledog - if you want them to burn then slow them right down with a full stretch at the bottom so the db goes forward away from you and you pull it up and back toward your upper waist area and of course as high as you can without sacrificing your form.
I was lucky coz when I did db rows it was the first execise I ever did for back and it just pulled my lats out after about two weeks. Every back execise I do is very very strict and my back is as fully flexed before and during and after each rep as I can manage. When doing bb rows especially make sure you don't lift at the hips at all. Your back should be hyper extended (partially) all thge way thru the movt but no movement should be made in the legs or hips or waist. Complete control is the name of the game. Only perhaps iof the weights are insanely heavy should that form ever be sacrificed and even then only marginally as risk of injury is greater.
Anyways - bent rows whether db or bb must be controlled and with back flexing throughout. Good luck.