Anywhere, anytime. I always look at ports, number of ports, and port times (as some lines stay in port longer than others). Then, look at what you like to do: water sports, site-seeking, shopping, beach, clubbing, etc. Finally, this about the weather for the time of year you will be sailing.
Nice to see you posting. We are a little thin here for a while. Feel free to chime on in anytime. Happy sailing!