I only use DBs for chest presses. It's the only way I can establish feel in my pectorals. I occasionally use lite weight for BB neck presses; I may use something like 135lbs or maybe 155lbs tops and really concentrate on form. Otherwise my chest training consists of dips, incline DB presses and flyes, and DB pullovers. Occasionally I switch things up of course, but those are my core exercises. I'm more likely to switch up intensity techniques or volume than actual exercises.