The only benefit to a conventional edger is if you are constantly having to clean up edges that have not been maintained. Even then, I would have a tough time not picking one of the heavier stick edgers instead.
I just couldn't see why to use a conventional edger when I have the biggest Stihl edger (FC110 engine) mated to a curved shaft instead of the straight shaft that was on it originally. (Stihl did not offer the FC100 in my region at the time).
Overgrown grass growing a foot or more over the sidewalk? No longer a problem with this badboy. Preferred the curved shaft since the straight shaft had me walking up on the grass till I learned to hold off to the side. Still then it didn't feel natural.
Some of you will become "Victims of your Vote"
Unfortunately, you're gonna drag the rest of us in it too.