Really, all you need to do is pick one press that you like, it doesn't matter if it is standing overheads, seated military, behind the neck seated or standing, seated or standing dumbells, push presses.....whatever you like....just keep the exercise constant, then pick a set/rep range to keep constant, whether it be 3x10 or 5x5 or 4x8, or whatever you decide. Keeping sets/reps/exercises constant is how you measure progress.....if you constantly change exercises and rep ranges, you don't have any clue if you're actually any better than you were the week before or the week before that.
If you want the most functional strength possible, I recommend doing the presses standing, next best is seated with no back support.
I am a fan of frequent workouts.....you can do something like barbell for say 4x6 on a Mon and dumbells for 4x8 on Thurs. OR you can make one session heavy and one light and do the same exercise....or you can go 3 days with an OHP, and incline, and something flat or dips or dumbells or something like that.
But, the key to growth is progress with the same exercise over a constant set/rep scheme, and of course eating enough to foster growth. The body responds to total work......going lighter to get a certain 'feel' doesn't mean it is necessarily better for hypertrophy, taking that your form is equal with both weights.