I used to travel with the Sigma Trio for Sony APS-C: 16mm, 30mm, 56mm F/1.4 and the quality was amazing. However, being the heavy traveler that I am (up to 6 continents this year, yes, I said continents, not countries!) I need something more travel friendly. Switching between 3 primes was just soooo annoying. This 16-55mm G lens gives me just as good as image quality and now the extra convenience. Also for travel, I found myself shooting a lot of environmental portraits at F/2.8 - F/5.6. For example if the background is too blurred (i.e. Eiffel Tower or the Egyptian pyramids) then it doesn't show the beautiful scenery. Therefore I am not missing out much on the Sigma's F/1.4 at all. Now all I need is for Sony to make a APSC super wide angle zoom version 2 (update the Sony E 10-18mm f/4 to a GM or G series!)