Lawn edger ones to avoid and the game changer

I have a lawn that that has a inward curve that stretches for most of the lawn almost a half tear drop shaped lawn of that makes sense, what's the best edger to use betwwen the concrete kerbs and the lawn that would work for this shape of lawn , I have had one of those semi circle blade ones but there is strong as a tea spoon , I seen thise ones that's a wheel with a printed cutting disc on side are they any good? Thanks in advance