I think it depends on what shots you typically play. For me I'm looking at purchasing a set of AP'3 as well. My setup would be the following:

Driver: (8.5 degree)
3 wood: (15 degree)
818 Hybrid: (19 degree)
718T-MB 4 iron: (23 degree)
718AP's 6-P: (28 bent strong to 27 degrees, 31, 35, 39, 43 degree)
SM6 wedges: (48, 52, 56, 60 degrees)

So technically I'd have a 5 wedge setup, really the only thing that matters is the lofts.

Hope this helped.

Josh

I have the AP3's. I went with PW, GW, and vokeys 54 & 60. My reasoning was I would use those clubs a lot more that a long iron.

I would try to fill the gaps as best as possible. If you have a large gap between 3W and 3I, I would fill that and have one less wedge. However if it's not much of a gap, go with 3 wedges. Look at your game and figure out where you are not scoring and apply that to the club choice you make.

In general, I'd want to make sure the yardage gaps with my wedges/short irons are dialed in. After all, those are the scoring clubs. Once you get those gaps exactly how you want them, then move on to the top end of your bag if you still have room for another club.

Depends on what you need between the 3I and the 3W. If you are missing "a club" to get on a par 5 in 2, then that is what you need. If you need more flexibility from inside 140 yards to get up and down more, get the wedges you need. It's all about putting the ball in hole and seeing where you are losing strokes.

I would guess you would hit the wedge more than the 2 iron. You could always get both and switch them out depending on the course you play.

I dropped my 3 iron and hybrid and replaced it with a T-MB 2 iron and added another wedge. I then upgraded my irons to C16's, which don't have a 3 iron anyway, so this worked out well for me. The 4 iron in the C16's is pretty strong. I found that I just wasn't using my 3 wood and hybrid much but needed more flexibility with my short game. As Don pointed out, it depends where you feel you are missing a club.

If you play a lot at difference courses you will likely find that you need both. I keep two sets of wedges in 2* increments with different bounce and grind. Some courses I carry two, three, and some four wedges. On courses that need more long shots I pull a wedge or two and add a hybrid, long iron or additional fairway wood. Yes, it gets expensive, but, it does allow you to set your bag to score no matter course conditions. Now, if they'd just change the 14 club rule.

I think I replied to one of your comments around this subject. I have the SM6's 48, 52, 56 and 60. I use the 48 and 56 a lot, the 52 here and there, the 60 once in a blue moon. If you notice I am 4 degrees apart, for a good reason. But if I could only afford a couple, if would buy the 48 and the 56 and work with them to get the loft I needed to lob, pitch and chip. I have all 4 because I am lazy.

Depending on your ability (don't take me wrong or personal!) of hitting a 2 iron solid and consistent!
Suggest to test both clubs and take a decision afterwards

I upgraded from AP1 to AP3 and not looked back, worth while change, the bag is also 7 & 5 woods, driver and 3 SM6 wedges they all compliment each other.
How ever after talking to a Titleist Pro I have just ordered 2 SM7 wedges in Graphite, you won’t go far wrong if you buy two and you can always buy a third.