Depends on circumstances; where the pin is located on the green, where the trouble is, and what the distance is (i.e. is it a good.numbet or a tweener). Anything from 160 in is green light unless the pin is tucked or trouble looms with the likely miss!
Right now my home course is a brick, but the greens need to be watered to keep them going so the run up requires some finesse and the high shot is the percentage play. In these conditions the front pin is typically the hardest to get close as landing just short bounds to the back of the green or over.