DB/BB Bent Arm Pullovers tend to hit the lats, and even the triceps, more than the pec's themselves.
Might suggest doing the Pullover & Press (bent arm pullover combined with the bench press). Hitting the lat's, pec's, delts, triceps and even the Abs. A true compound movement and upper body mass builder. Either with BB or DB, you are also getting a very good stretch at the full bottom position.
The common performance is to do a pullover and than a press, pullover, press, pullover, press, etc....in the same set. A few will do the pullovers first and than (without releasing the grip on BB/DB) the press. Suggest the common performance, just a personal view. Some find that a BB puts too much strain on the wrist/forearms, than suggest using a pair of DB which allows a hammer grip. Holding the BB too wide will also put undo stress on the shoulder joints. Want a medium to close grip, to be most effective.
Can also SS straight arm pullovers with the Pullover & press, if you into a outstanding pump. I've used the Pullover & Press, with the GVT (10X10),on occasion as my only upper body exercise with very good results. Good Luck.