I live in a pretty hilly area - ride both deraileur and IGH bikes.
When keeping track of the actual gear ratios [actually gear in] most often used-
found that about 35 and 65 gear in were most used. Just so happens the range
covered by three speed hubs just about covers these two ratios. First gear is about 34, middle gear around 47 and third is 64 - this is a nice range for a surprising amount of riding. SA, Shimano or SRAM all will probably provide great service, was the rear wheel spacing as one poster noted - that will most likely dictate which 3 speed hub to actually get.