I used to do dips ALL the time, and got tremendous results in size and strength. After switching to westside about 8 months ago, they haven't been touched since. I just started doing them as assistance work on Wednesday and think they will be a regular exercise once again. As far as depth goes, I go pretty deep, I have pretty flexible shoulders, and I like the stretch, I absolutely make sure the decent is VERY controlled. If however, I was experiencing ANY shoulder discomfort, I would switch to one of the many 1000's of tri exercises that don't irritate the shoulder.