Which ET Calculator/Weather Station do you suggest

I use this website with my phone, just look up your track: http://airdensityonline.com/tracks/

I use that, along with my log book I got free from Jegs. Once you make enough laps with the car and accumulate some data, you will know what to do for most weather conditions. I have enough data and my car is consistent and predictable enough that I don't even really need time runs, but 1 time shot is nice to have for peace of mind.

So, I guess you could say that I see no need for a 400-800 dollar weather station personally, but some folks like them. I would rather spend my money elsewhere...JMO.