I've been to Filzmoos now for the past 7 years and each time thoroughly enjoyed it. I've skied in France, Italy and Andorra but prefer the smaller, picturesque villages you get in Austria.
We picked it initially as it accepted very young children in its ski classes, and my daughter has enjoyed every minute of her skiing from 3.5 years onwards.
Everything in resort is close by - essential with children. Good restaurants, good night life and good accommodation. You can easily ski in another village if you want to be more adventurous. But runs in general don't tend to get crowded - again good news for families and for lazier skiiers with dodgy knees like me.