Just as in buying art, this is a very personal question...for instance I do not at all like small breed dogs like the ones mentioned in other answers...I just don't find them cute at all and their high pitched barks actually give me a headache. But, I love large breed dogs as long as they are well trained. To me, they are truly cute even as adults. They have big dog barks that don't bother me unless they never stop barking!
Recently, my husband and I rescued a black lab/german short-haired pointer mix and he is wonderful and easy to train. He is not a barker and is wonderful with children (and he is only 7 months and 60 pounds!) He is absolutely cute!!!!!!!!!!! Hope no one is offended by my dislike of his little cousins...to each their own I suppose!