I purchased this couple of months ago and use it every time I'm out and have a drink or two. I purchased additional mouthpieces which come individually wrapped and I have shared with friends and allow them to use my machine.
I bought this about 6 weeks ago, and have used it once. It worked great and will provide me with the resource that I needed to perform on the spot testing when the need arises.
I bought a new S80 that seemed good. My very old S70 was recalibrated, but gave bad results. You gave me a good deal on trading in my S70 for an Element; now I have complete faith in both the S80 and the Element.