If you are comfortable as a diver when getting your open water certification and have the opportunity to make some dives in your comfort zone with peers or mentors I suggest making some. How many depends, 10 or so is probably plenty, more is OK.
My rationalle is that in AOW you will be doing some new stuff. Going deeper, into the night, performing navigation tasks, whatever. Getting the basics on their way to being habit will let you concentrate on the new stuff and get more out of those specialties. After you make your openwater dives reflect at how much attention you had to devote to observing, sight seeing and relaxing. If the dive was a blur of new sensations and excitement do you really think you can effectively absorb much new stuff immediately?
If you are not comfortable to make uninstructed dives then go straight to AOW so they can finish what they started.
There is no one right answer and like most things scuba it depends on your ability, comfort and circumstance.
Pete
My rationalle is that in AOW you will be doing some new stuff. Going deeper, into the night, performing navigation tasks, whatever. Getting the basics on their way to being habit will let you concentrate on the new stuff and get more out of those specialties. After you make your openwater dives reflect at how much attention you had to devote to observing, sight seeing and relaxing. If the dive was a blur of new sensations and excitement do you really think you can effectively absorb much new stuff immediately?
If you are not comfortable to make uninstructed dives then go straight to AOW so they can finish what they started.
There is no one right answer and like most things scuba it depends on your ability, comfort and circumstance.
Pete