The bench press is not always the best exercise for the chest/pec's for a lot of folks. It has been over hyped to the extreme that everyone thinks they should do it for chest mass. Not always so.. If the BP works good for you, than great. If not, than select something else worth your valueable training time.
The best hand position is the one that works best for you, weither it be extra wide, middle or close. That being said, men who have used the three grip position, starting with the extra wide (as close to the inside collars as possible) in the same bench workout seem to progress well with regards to development. Usually 2 or 3 sets each grip position in a single chest workout. I have a long arm span (at a little over 6'2 & 240) and use a bit wider than shoulder grip. On occasion, when doing extra wide, I can hit those inside collars (even wrapping the little finger around them) with no trouble, touching the upper chest each rep for that extra stretch,
If your chest/rib box is deep than the bar can only go so low. Switching to DB's may offer a better stretch, angle and muscle involvement that a straight BB could ever do. Giving better odd's for max chest development. Consider inclines in this regard also. In my view weighted dip's (with different hand positions) affect the chest/pec's much better for most trainee's than either BB or DB flat bench presses. Good Luck.
