To anyone new to WU it may seem like WU is just garbage.
...And there is no alternative to WU live rapidfire unless you put up your own website.
As someone who's been in this a very short period of time, I must say that looking across the landscape WU is still one of the best sites out there, if not the best. They aren't garbage to me at all.
I've seen them when their updates are over 8 minutes behind and that sucks, especially when a big storm is rolling through. But as mentioned, their rapidfire updates are working well right now and hopefully they will continue. There just isn't another weather site that updates as quickly as they do.
Also I like their graphs and their summary data for each day. Their layout is clean and isn't busy. And I like the fact that most people in the weather station world contribute to WU, meaning I can easily compare my data to davis or other stations nearby.
I do use other sites like AWnet, especially when a storm rolls through. I like that they, when in radar mode, show the rate rate of other ambient stations. But they still only update at most every minute, just like Ecowitt and others. Which is why I'm always back to checking WU.
I know I don't have the time, knowledge or experience of many of you, so just my two cents for what it's worth.