Anybody have one of these?

On "Shark Tank" they had an inventor pushing a balloon system where the inflated balloon protects the wine from oxygen exposure but it looked like too much hassle for a few days' gain.

I always thought the idea of putting an inert gas into the head space made more sense, as subjecting the surface of the wine to any vacuum is going to pull some volatiles into the head space to be lost the next time you open it. I think you pull the nose out of the wine faster than it wants to come out, and its not coming out in the glass.

Funny! At a wine show here in town today, one of the tables was selling these.