Deadlifts seem to have only helped my lower back size and strength, and increase my traps. But thats about it. I love them as far as one of my favorite lifts to perform, but for all of my upper back size, lat pulldowns,dumbell rows, barbell rows, chin-ups, low cable pulley rows,T-bar rows have been the beef of my upper back routine. I never got any measurable upper back increase from deads even with the dramatic increase in strength over 2 years time. I was already plateaud when I started the deads however, but now my routine is going to be changed. I plan to focus more on upper back specific work and deadlift less frequently for a while. After pulling my back out, slightly, again a few days ago, deadlifts seem to be tearing me up more, then the good they are doing at the moment. I may take a break from them for a while and just tear up my upper back with t-bar rows and the other exercises I mentioned. Thats when I put on my back size. Since I am able to sustain my deadlift strength over long lay offs from the exercise, Im thinking of just doing weighted hyper extentions for some maintenance, while I practice squatting and possibly build my strength on that for a while. I can always go back to deads later and come back stronger.