I'm very impressed by my cheap 18-135 f/3.5-5-6 IS STM kitlens.
The sharpness is great through the entire focal length and it can produce pretty good bokeh shot at the end of focal length 100-135mm.
I don't understand why I would ever want to invest in a L lens like, lets say 24-105 f/4 IS. Sure f/4 through the entire focal lenght is great and all. But it's twice as expensive. 200 grams heavier. No wide angle. Is it sharper? I doubt it.
Perhaps a bit better colors and contrast? But after PP, is it even noticeable. Better built quality, ofcourse.
I don't know. I never owned an L lens, maybe you have to actually own one for it to make sense?
What's your thoughts?