1. Don't drool when you look at the AP1 versus the G15/25.  Much better looking club.  Important for #3.

2. With more shaft options, take the time to get the right feel.  Don't rule out an AP2 until the fitter sees your swing.  The only workability I have found with the AP1s are straight, shank, and slice.  98% of the time straight is good, but every now and again, a draw or cut would be nice. 

3. At least at my fitting, the net price for the AP1 ended up just under the price of the G series.  Pro shops set their own prices so there is some wiggle room.  The G series can't even throw in a hat to seal the deal, that company is very serious on that point.

The last thing I forgot to mention that most fitters will not touch a png iron to adjust loft or lie angle because of the risk of breakage.  There is also an error of ~ 2* upright on what a Mitchell lie angle machine will read on a png iron.  I've had some of the fitters tell me this thing.  I had to send my Eye 2s back to png to flatten them from Yellow Dot to Blue Dot.

One thing is that png irons have a separation of .75* between clubs vs .5* between clubs from the 5-PW.   Png Blue Dot and Titleist standard lie are the same at the 7 iron.  At the 4 iron they should be close to equal and the 5 iron would about 1/2* flat for the png and 1/2* upright for the 9 iron.

I played Eye 2s before switching to AP1.  Also had to account for the fact that an Eye 2 9 iron has the same loft as the AP1 PW.