Well, I had one of their Temp only sensor that lasted about 5 years. Started having issues with it losing connectivity. That said, I now have the 75077 (about 3 months old), 01015 (about 10 months) and the web bridge 09150TRX (about 3 months). All are working great.
I have a Regional airport about 8 miles south and my data is close. Not sure if the differences are accurate or not. For example my temp is currently 54 theirs 52. My dewpoint 44, theirs 39, my humidity 70, theirs 62, my pressure 30.20, theirs 30.33. My wind S @ 6, theirs SE @ 8 and no precip at either. My elevation is 394 and theirs is 318.