I must admit that I find Chrome's devtools the easiest to use, but that's probably because it's what I'm most used to.

I work at a web dev company and there's a pretty obvious split between people who prefer FF or Chrome devtools. Every time someone says "but you can do this with x devtools but not in y devtools", it's met with a member of the other party saying something to the effect of "yes you can! it's here!". I think it's just a matter of opinion/what you're used to.