Do you use a super cheap one or a brand name ? Waiter's corkscrew or winged? (I don't want an electric one.)
According to Kassensturz , the best is one going for 74.90 at Globus - but runner up is the Prix Garantie!
My current corkscrew just had its spiral part break away from the handle (I had to twist it out using pliers.) Anyway it had a tendency to slip off the lip of the bottle top.
I don't care about the brand, but I want something sturdy and durable.
I'm currently using a very robust stainless steel winged corkscrew that was given as a gift to my parents some 40 years ago. It still works perfectly.
When I moved to CH I bought a new "normal one" for myself and I later discovered that 5% of the bottles have a neck too large that doesn't fit. Another one had plastic parts and they broke. This one will probably survive me...
I use the waiter’s corkscrews. Works perfectly, takes up minimal room. Wife bought me an artisanal tool to get the foil off, which I use, not because it’s better than using the cs’s small knife but because ...
Normally just use the first corkscrew I can lay my hands on from the collection we've amassed over the years either waiter style or with wings or even this souvenir from Brussels.
An ideal corkscrew should be difficult to operate so as to make opening a bottle an unpleasant, inhibiting experience and thereby making a positive contribution to its user's health. However, not having a corkscrew at all could be a health risk of its own because of the improvisations which may be resorted to in such an emergency like breaking the bottle at the neck and filtering the contents through a terry's nappy or gouging the cork out with a sharp knife or screwdriver.
Incidentally, a tip for the less experienced drinker: even with the best corkscrew that Kassensturz can find, don't be tempted to try opening a champagne bottle with one.
If you drink old wine, focus on a corkscrew that has a real spiral rather than one with a central spine and ridges (like a screw), as this will likely break your cork and leave crumbs in the bottle.
If you drink really old wine, it's worth keeping an Ah So corkscrew on hand for delicate corks, or to salvage a cork that breaks upon opening. Also, you get to say "Ah So!" as you open the bottle.