You might want to try them out before buying. I tried them at Scheels and the rolling ball effect/barrel distortion really bothered me. But I might be more susceptible to that since I notice it some on the Meostar S2 scope (20-70x) at low zooms, while many people only see a minor effect if at all with that eyepiece.
Scheels does offer free returns for a year window, so they'd be great for testing out optics.