I think you can't beat a Labrador for an all rounder, easy to train, good with kids, fantastic temprament.
Springers very good and hard working, mad as a box of frogs !!
Clumber, my experience of them is not good, had the Clumber club at our shoot a few years ago, featured in shooting times, had to put bird in the mouth of one for a photo shoot, not a good dog between them.