I voted 5, based on using 8x10's. The best place to get them around here is Eckerd, because their digital prints are done on regular photo paper, just like the 35mm prints, not out of a kiosk/inkjet printer.
Just a note to digital people, look for someone who does this, as print life should be longer.
The down side is $$. 8x10's are $4.50, the highest place in town.