A good combo would be 18-55 + 55-250. Covers a wide range.
However if your prefer an all-in-one package get the 18-200 or the Tamron 18-270
I was thinking of getting on for my next holiday trip, so I can travel light with my family...Now my question is this, when you put brand aside, which is actually a better choice in terms of speed & sharpness?....
Canon 18-200 or Tamron 18-270?