I agree with Bob - I have the Kestrel 3000. We use them in my job, too, when monitoring and logging weather conditions during hazardous waste site clean-up. I saw them rated very poorly in a sailing magazine recently, but I love mine. Pop-in replacement rotors are available, but mine's been fine for about four years now.
Mary - I think the instruments are accurate. I also think some of those reporters are going for an Oscar.
Guess we're next up here in the Panhandle if the system gets moving again...