Hi everyone,

I'm new here, and I have a Canon rebel T3i, along with the kit lens of 18-55mm f/3.5-5.6 IS, a 50mm f/1.8 and a 55-250mm f/4-5.6 IS.
I was looking to get a "walk-around" lens and I couldn't decide on a couple:

Canon 18-135mm f/3.5-5.6 IS
Canon 28-135mm f/3.5-5.6 IS USM
Canon 24-105mm f/4L IS USM

Yes, I understand that one is an L, but for the price of the other two, is the image quality that much of a difference?
and I believe that the 28 and 24 on a crop sensor will hardly give me a wide angle.

some advice would be great!

Thanks