In "4 hour body" Tim Ferris has a Template for improving the bench press. Can't remember who worked it out for him right now. But it was a systematic approach, starting off with moderate intensity (weight) and high reps (~10) and working your way up. In this template you would work on your bench once a week, and do regular, wide grip and narrow grip bench presses in this session.
As to which path is the best - I would think it depends a great deal on where you start off.