Havent Read all the other posts but, just something to think about.....pre-fatigue, if you use a small "isolation" movement like the fly, for only about 10 reps for light-weight, then move on to pressing exercises.
Me personally i enjoy chest day as probaly my favorite next to legs, but my work out looks like this:
Warm up(push ups just enpugh to feel warmer, usually around 40-50, also i switch with incline flyes, and flat flyes)
incline(30-45degree)bench with eitherdb or bb, 4x6
Flat bench 5x5,3x8, 4x3(for 95% of 1rm)
Squeeze press 3x8, 4x6
then finally db pullovers(gotta love them at the end) 3x10,
just tryin to help.