When going to get a bigger bench, remember, a lot of muscles come into play. Triceps and front delts play a huge role. Also, leg drive plays a significant part for people going for more of a power bench. Believe it or not, your back and lats are involved, too. So make sure you're working these body parts sufficiently. Pause presses are a good idea to implement into your program. Even going higher reps for a workout or two could push you through that plateau. Form and technique are huge as well. Sometimes just getting good technique down can dramatically increase your bench.