I love my AP sent it and be done. Smooth transition from OL/CL the car drives so much better than it did stock. Boost will be raised from the Map you download to flash the car.
The boost gauge and EGT guages are not a bad thing to have but not necessary, just helps monitor the cars performace.
If I had to do it again I would still go AP. If later down the road you add a turbo and injectors their is another map you can flash using the AP. And if you want to tune your car specific instead of a off-the-shelf map you can buy Street Tuner which is software that links to the AP so you can modify the maps