Might suggest dips as a better all around chest exercise than benches. Try dips with the knuckles facing forward, rather than sideways, for a whole new feel to the pec's. Though, if placing the hands too wide when dipping (any grip, regular bar, "V" bar, etc) some men get too much stress on the shoulder joints and tie-in area. Have to decide for yourself. If having long arms/wide body as myself, probably no problem will arise.
Can not isolate any single muscle group with any form of benches. But if you use different hand spacings, when doing benches, than certain areas can be more focused upon. Like pecs over delts/triceps or triceps over delt/pecs, etc..
Having a wide grip and bring the bar done to the neck/upper chest get the pecs very well, if regular benches do not seem to be doing it for you (caution..warm up well before doing these). And as suggested by Bluto, DB's can affect the pec's themselves much better for most men. Quite a few men have had success with doing the bench with the wide, medium and close grip bench in the same chest workout. Usually 2 or 3 sets each position. Good Luck.