i had the TFA Nexus, after a year or so the temperature/humidity sensor failed - replaced that then the anemometer started dropping out.
Then the anemometer literally flew apart one day with 60mph gusts.
Rain bucket tips at 0.7mm which is too large really.
Radio link on it is weak and in some conditions it will drop out inexplicably when only a few feet away.
Vantage Vue has none of these problems.
The only drawback is that you can't separate the anemometer (although you can run a separate anemometer system which the Vue console receives instead)
In a good open situation this isn't such a problem, but an enclosed garden you will often wish you could have it higher than is practical bearing in mind you need access to clear the rain bucket and change the battery probably annually.
The drawback the Davis does have is cost - the unit itself is reasonable for what you get, but to connect to a computer you are obliged to buy their special logger unit with archaic software which is light years behind weather-display or (free) Cumulus.