I opened the Aida vineyard 29 that Parcival shared with me 2 weeks ago. We drank, I would say, 1/4-1/3 the bottle that night via the coravin. After 2 weeks, no signs of seepage nor oxidation what so ever. It was stored in a wine cooler at 57 degrees for those two weeks. The wine had the same highly concentrated fruit characteristics from the 2 weeks prior. We tried it next to a 2005 HSS and, personally thought it showed better. But, that's for another thread...so far so good with the Coravin.