I have a pair of 23mm Celestron Axioms (1.25", 70* AFOV) which have been my workhorse wide-field binoviewing eyepieces for the last 2 years. (I recently upgraded to the 24mm Panoptics.) These Axioms have excellent contrast rivaling the Panoptics. The edge correction isn't as good as the Panoptics but with a 2x amplified binoviewer even in fast scopes you won't see the difference. Check out the reviews at Excelsis.
If you are starting out in binoviewing and looking for an excellent quality but inexpensive pair of wide field eyepieces, these cannot be beat.
Eyepieces come with winged eyeguards and bottom caps, but only one box (sorry). Price is $250.00 USD for the pair shipped to your door in ConUS and Canada.
Thanks for looking!