Hi,
I thought my experiences might help you out. I had a 550D with a canon 10-22, 18-135 STM, 50 1.8, and the 2 kit lenses 18-55 and 55-250.
I got the 18-135 STM as I found the 18-55 didn't have enough reach for a general walk around lens, and when out on holidays I didn't want to be changing...