>>4095387they're all very different. 18-55 is a great small everyday/travel zoom. 16-55 is a flagship 24-70 equivalent. I think the 16-80 is an awkward in-between. The 16-55 benefits immensely from IBIS since the others have OIS and are easier to handle. my preference is the 16-55 for when I'm shooting a project or in a studio where the size/weight aren't a hassle. otherwise I find primes better for walkabouts/daily carry