Done right...
Do Poliquin's warm-up...
Incline Barbell Press x 6 sets...choose your weight so that at the 5th set, you are using a weight that you can just barely by the skin of your teeth get...
1st set - 10 reps
2nd set - 8 reps
3rd set - 6 reps
4th set - 4 reps
5th set - 2 reps
6th set - drop down to your 1st set weight and crank out as many as you can, no matter if its 2 or 20.
The whole focus here is on the 5th set..what I call the money set. That set should bring fear into your soul...rest no more than 90 seconds between sets.
Now...drop the weight on the inlcines down to 65% of your max. Do 3 sets, with every rep being a 1-2 second pause at the bottom. I try and do 3 sets of 10 that way. After each set, run over to a fairly low incline bench and perform a set of 10 rep flyes, concentrating on the bottom (stretch) and top (squeeze). Pick a weight that will allow you to perform the movement with proper form, and get your reps. The emphasis here is on stretching that already pumped muscle.
Perform the last 3 sets failry quickly (no more than 60 seconds rest between).
Stop. No more sets. No more exercises. If you still feel like you could have done more, then you need to adjust the weights on the exercises up.
I actually do the 10/8/6/4/2 rep thing on chest/shoulders/legs.
I think that hitting them hard and fast, then on to recovery, is the best way to go. I haven't done over 10 sets for chest in a work-out in over 10 years!