some good advice here from other members..i would incorporate and try different sets and rep schemes, different variety of exercises that trains the entire back, and find what responds to YOU best. my best advice i could give is train your back as heavy as you can, but focus on FEELING the exercise in your back. concentrate on the contraction, the pump. it's easy to get carried away and use to much weight, which looks great, but causes little muscle stimulation for the entire back region. so train heavy, but don't sacrifice form and feel.