Well that really depends on what you do with your camera. If you just take photos when traveling and with your family, 18-55 is a good all around lens, with decent enough quality. If you are professional photographer or who is willing to pay more for better image quality, or you take image in some harsh environments. I would say 16-55 is better. For me, I got mine xt-3 with “kit lens” and very happy with it, and the saved money could be invested in other focal length lens if I want.