Santa brought me the Oster electric. So far it has opened one bottle in a row perfectly.

My standby is a no-name but heavy gage stainless steel waiters' model. The heavy gage stainless means that an imperfect placement will not cause it to torque over and bend.

The bent corkscrew occurred on a picnic at Wolf Trap near DC. Fellow picnicers got the joke when I approached them pleading a "corkscrew malfunction." The day was saved by a loaner corkscrew.