Thinking about getting a new dog, any suggestions?

I haven't had a shih tzu yet but my observation says that it is the friendliest breed. My sister had 2 shih tzu dogs already and I find them very friendly and tame. In fact, they only bark when excited although my sister said that they also bark when they see intruders (people they see for the first time) and also cats and other animals. What's a plus for shih tzu is their thick coat that makes them nice to caress and cuddle. The teacup breed is best since it is easy to carry and you can bring it along almost anywhere.