Hello! I live in an apartment in San Francisco and am trying to decide on a dog. We currently have a 5 year old Welsh Springer Spaniel named Voodoo and he does wonderfully living in the city. We want a second dog and we are torn between the Stabyhoun and Kooikerhondje. We want to do agility, running, hiking, etc, would prefer a dog that is quiet/not a barker, not super senstiive to noises. What do you think are the main differences between the breeds?