The P-8 has been a model acquisition program. It has come in ahead of schedule and has not exceeded any budget thresholds. It has also stayed neatly out of the public eye, in part due to the law of JO thermodynamics applying to the F-35 debacle.
I understand that there are probably shortcomings in the airframe, but in the grand scope of things, this is the one that the Navy did right. They took a low risk approach to modifying an off the shelf product and it has worked extremely well.
For all you F-35 fans, I understand that they had to invent a new airplane, etc, but those Super Hornets are looking better and better the longer this thing gets drawn out.