Simple corkscrews are tricky to master, and expensive corkscrews are, well, expensive. But I haven't used a corkscrew in years, ever since I saw a pro opening bottles with a simple $7 two-prong cork puller. These devices are cheap, quick, easy, and just about foolproof.
To use one, you just put the long end between the cork and the bottle, then do the same with the other prong on the other side of the cork. Wiggle the two ends down until the prongs are all the way in the bottle. Then just pull the cork out, twisting as you go.
This video walks you through those motions, but once you know what you're doing the whole process only takes a few seconds. Keep a cork puller in your kitchen drawer, and you'll never be more than a minute away from an open bottle of wine.