[FigBug]

Looks pretty cool, but isn't cork on the way out? Will it work with a screw top as well?

[mattmaroon]

The cork should be on its way out, but if it is, it will be really slow. The better technologies (screw tops, bag in a box) are associated with cheap wines. It will be a long time before any substantial number of $20+ wines use them as a result. The wine makers would quite rather 10% of their product go bad and have to be refunded than have it be thought of as Franzia. (I have seen a lot more synthetic corks popping up, and this product might work with those.)

It's the same with beer and cans.

[sjtrny]

Depends where you live. Here in Australia twist top is king. Most bottles you buy that are <$40 from 2011 onwards are twist tops (excluding carbonated, people like to pop the cork even if it's a synthetic one). In recent trips to the US I've noticed that it isn't as popular. People there seem to think twist top is cheap or tacky.

[Stratoscope]

Cork only. Read how it works and you'll see that it can't work with a screw top. You can use Private Preserve with screw tops.

[FigBug]

Do you know how private preserve compares to just pumping the air out, which is what I currently do?

[Stratoscope]

My feeling is that PP works better. I think this because the gas displaces all the oxygen, where pumping the air out only removes some of it.

Best idea is to try a can for yourself.