What type of dog should I get?

I am looking for another dog. I don't know what type I want. I do know though that a want a bigger dog. It doesn't have to be a pure bred. I want a dog that is loyal, intelligent, and fluffy. I want it to be playful too. I want it to want to be with me and sleep with me. What type of dog has those trAits? Mixes are also good too:)