I decided to change my cycle mid way through today. I am starting my 5's and my 5RM for flat bench is 305lbs. I am pleased as it was a long time personal goal to break 300lbs 1x, but since I don't max out I reached the goal doing it 5x
. My shoulders (not to mention hands) aren't thrilled about the load of 300+lbs so decided to take out flat bench and put in incline bb presses (shoulder width). Mike Mentzor claimed they were the best for training chest due to the range of motion. I did them today for the first time in a long time and only did 220lbs 5x, my 5RM should be 230-235ish. Much to my surprise I can feel that my pecs got a better workout than they have in a long time.
I am currently cutting, so I am trying to keep the weights heavy. After todays workout, my pecs are convinced this is the best way to go, but wanted to hear what others had to say about it.
So what do you think, what is more beneficial? A greater stretch with less load or a greater load w/ less range of motion?

I am currently cutting, so I am trying to keep the weights heavy. After todays workout, my pecs are convinced this is the best way to go, but wanted to hear what others had to say about it.
So what do you think, what is more beneficial? A greater stretch with less load or a greater load w/ less range of motion?