03-06-2018 05:04 PM
"The T7i on the surface is not any more complicated than the T3i, just better by about 7 years."
That is so important. There have been many improvements to the Rebel line since the T3i. However, the Canon EF-S 17-55mm f/2.8 IS USM Lens will improve any camera that is currently using the standard 'kit' lens.
Later on consider adding the Canon EF-S 55-250mm f/4-5.6 IS STM Lens to more complete your bag. It is not as fast and it is a variable aperture but lenses in this class usually are.