04-30-2018, 12:40 AM
I don't have personal experience with the Tamron or Sigma superzooms, but as for Canon, definitely the 18-135 over the 18-200. The 18-135 is a pretty good lens. And although we're talking about two different lenses (when you want only one), the 55-250 STM is also a very good lens.
However, just so you know, your 28-135 is compatible with the 80D.
However, just so you know, your 28-135 is compatible with the 80D.