i train each muscle every 6 days (Split, 1 Day on, one day off,...so 3 Workouts in 6 days).
i have 2 programms for every muscle, so the same workout will come again every 12 th day.
For chest i use a barbell movement as my first exercise (flat + next workout incline at the beginning)
For the second exercise I´m doing after the flat bench press a incline machine exercise, last and third exercise is an isolation movement like flys or pec deck.
Example chest-workout A + B
A
Barbell bench press
Incline machine, plate-load
dumbell flys on a low incline bench (around 20 % angle)
B
Incline bench-press
vertikal chest machine, plate-load
Pec-Deck
i train with PITT-System which is much like ROB-Training (1 rep, one short rest, until faillure occurs,
warm up + 1 "Pitt-Set", than next exercise, ....)
example of my 2. Second chest exercise in "PITT-Style". (I`m 43, 6 "2,5" tall, natural)