We do love our Ahwatukee Bosa, they usually have a good selection of donuts, even late at night. We have always enjoyed a good custard filled donut, their Boston creme is up there on top the list for classic custard filled style. They also introduced us to the chocolate covered old fashion, forget cake donuts, go this route, it has that crisp edge all over which is awesome when deep fried.
They are also super easy to work with I'd you need a bunch of donuts for an event. I just stopped by the night before, ordered 8 dozen and picked them up in the morning. Easy, efficient and tastey.
Add, they get pushed up to 5 star on availability. We have never found them closed when we just wanted to stop in for a donut. Get out of a movie at midnight and need a sweet treat, Bosa might still be open!