The variation of the band pull-apart method has you doing regular reps, but slower than usual. This is more for muscle-building than improving weak spots or improving the role of the back in the bench press.
Depending on your objective, you can vary the approach. It's practically impossible to overdo pull-aparts, so use them often.
Hey, wanna tick a lot of people off? Want to start a flame war, a heated academic discussion, or just a good old-fashioned penis-waving contest? Then come out publicly and say that total body training is better than body part split training.
Anytime you plateau in training, it's rarely because your program isn't complex enough. Usually it's because you've strayed from the basics. Here's an overview of the basics of training.