Personally, I'm a big fan of the standing military press. Not only does it hit the delts but it also works the stabilizers (abs, lower back, etc.). Depending on how advanced you are in your training, you might want to cut benching back to one day per week. On the other day you would normally bench, do nothing but shoulder work, militaries, etc. The stronger the shoulder girdle gets, the more poundage you'll put on your bench. Also don't forget to do rotator pre-hab.