Be consistent. Pick one style and use it everywhere. It's nice if you can predict how something will be implemented from previous experience. And don't be fancy.
Style is overrated. Changing attitudes and requirements force different styles. It is not an accident of nature that generally the nicest languages to use are multi-paradigm, therefore allow multiple styles.
Previous experience can be very misleading. It is safest to come at the code and design as a blank slate. Prediction (also known as educated guesses) is worse than actual understanding, especially deep understanding.
Sometimes being fancy saves a lot of effort down the road. It is being fancy for its own sake or for purely imagined reasons that is dangerous.
