Personally i always do all three types of presses. Everytime starting with incline then flat and then decline, mixing Barbells, Dumbells, Smith M/c & the Power Rack (flat negatives).
Unsurprisingly i am strongest on decline (probably why i love this the most). I find whatever i have done previously, when i begin decline its as though its my first exercise (feel fresh). May have slight shoulder/tricep fatigue, but not that much.
Also, i have the bench (decline) on the highest setting, not sure of the angle but i have always done this, just feels better (stronger). I'm not that tall about 5'8". Anyone else find this.
I finish chest with 3 - 4 sets of dips (10-12)then 3 - 4 sets on the peck deck (arms straight & hold at point of most contraction for a count of 3).