I use a variety of styles for P and W. The key is to decide on a song and then find a style that works for it. I also use an equal amount of backing mp3's as well. There are several sites that offer backing mp3's, one being www.interactiveworshiplive.com. By using these files and a software program like Ableton you can do the same thing as an arranger keyboard would do in a worship setting.

Hope that helps,

Jeff