Definitely the Vantage Pro2... Still using my original installed in 2003. Have replaced rain gage, anemometer and temp sensor once during that time...No other problems to speak of. Backup battery in iss has been replaced 3 or 4 times, so very good indeed. Not a fan of the all in one stations at all... Can't have temp, rain and wind sensor at same height and expect accuracy on all three. Of course budget and installation availability may limit what you can purchase.