Have both stick & w/b edgers. Each has it's own use.
For normal 'usual' day to day use, the stick edger is far superior. Speed, ease of use, portability, blades real cheap and easy to change. Curves/irregularities are no problem at all.
W/B shine when it comes to creating an edge on unkempt properties. Esp. when there's a layer of soil that must be cut also.
I pull out the wb edger to do the heavy edged jobs. I take my stick edger with me every day it's not wet and use it for all other jobs. Edging with the stick edger is quick and easy if the edge has already been established. Each has its own use.