Well I am 6ft4in so I do lots of supersets seeing as I have a shallower muscle belly in comparison to the length of the bone (as compared to shorter people). The goal of drop sets to me is to hit the first set for power (4-9 reps) then the second set for burn (8-20 reps). I vary form on the second set but usually save drops for isolation motions as composed to compound.
So bench would be:
2 sets feet up but pigeon chest a little, thumbs behind bar...10-15 reps.
2 sets " " 4-6 reps.
2 sets feet down pigeon chest, thumbs over bar....4-6 reps.
2 sets feet up back flat against bench, narrower grip, 8-10 reps.
Then likewise for incline db press, flyes, decline flyes, smith incline, etc.
Variation is really the best to move around the sticking point during a bodypart IMO, not just workout to workout but WITHIN the same workout.
Also something like incline bench alternated DB curls superseted with standing wide hammer curls would really tear em up. You get the idea.