It depends on what you are looking for. For luxury travel with all modern amenities, then Kish Island is the best one to travel to. It is a resort island filled with hotels, shopping centres, malls, as well as beaches. For natural beauty, Qeshm is generally considered the best, as there has been less impact on the island by tourism and wildlife flourishes more there. This makes it the ideal location for Scuba Diving, amongst other things.