I've not once been told a burger chain is great, bitten into that burger, and thought "damn, that's a good burger."
Not In-n-Out, not Whataburger, not 5 Guys, not Culvers, not anywhere.
.
And yeah Cincy, a Whopper is about as good as it gets.  It's not tiny, has fixins, and I like the ketchup/mayo mix.  
But let's say In-n-Out is like 4% better that whatever.  The drive-thru is always full.  That 4% isn't worth sitting in a line for 27 or 13 or 8 or 18 minutes longer wait.  
It's just not.