I had a strength coach tell me that getting the elbow level with the back is as far as you want to go for shoulder injury reasons.
That said, I may go back to the DB Row my next back workout. It's low-back friendly.
Also, those DBs that he had were the same ones I have: the IronMind adjustables. Best adjustable bells in the world. 5-120 each. His was 55 lb. in the vid.
(edit: it's IronMaster DBs)