Just curious

[Innkeeper]

I mostly use the basic model screwpull. It has a plactic two prong body that fits around the neck of the bottle from the top. Then there is a teflon worm with a handle that you turn into the cork unitil it comes out. You only have a problem with it when a cork is in extra tight, or with certain artificial corks. The latter tend to strip the teflon off the worm. Worms are replacable.

By backup opener for tough jobs is what I call my monster waiters pal. The lever is a full 1/2 inch across, and the rest is correspondingly heavy. It came with my wine tote, and bring it with me wherever I travel. I have a smaller waiters pal made of chrome with very flat (versus round) edges on the worm, that I carry in my pants pocket with jack knife, comb, and pen.