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In my experience this is very specific to your anthropometry. I have a very wide clavicle and wide chest, I literally cannot get any other exercises other than incline work to get my upper chest bigger. However I have a friend with a more narrow shoulder girdle who can do normal dumbbell bench and get a huge upper chest. Basically, YMMV, try doing just OHP and Dips for 2-3 months at most and if you aren't seeing progress in the areas you want then switch up the exercises.