skardu is not a destination, it is a base camp for other expeditions, treks, awaragardi, it is a city nestled in barren rocky mountains and river indus, it has its own beauty,,, u cant compare places
naran is lushgreen, easy access, valleyof lakes, many short excursions,,,
in my view if you have not seen kaghan valley,than visit naran else, fly to skardu... 