I'm not sure how much I really need this thing or how often I'll use it, but I had to have one to satisfy my gadgetphilia. Works like a charm. Second "pour" of a Bryant Cab a week after the first is indistinguishable, at least by memory. But...
(Warning, you may not want to try this at home)
I proudly demonstrate my shiny new toy for my wife, who says, "That's really unappealing. The nice sound and look of the wine pouring into the glass is gone. It's so slow, like an old guy having trouble peeing."