I have to say, I love the sound of a pipe organ; there's nothing quite like it and it shows just how important the tuning and acoustics are. However, the church I am getting married in has an electric organ, and man does it sound good! It's impressive how it can create so many different sounds, especially when played by a true professional. But, if I had to choose, definitely a pipe organ.
Pipe organ is like vinyl when it comes to music records. It may sound old and scratchy but the music comes out pure. Digital organ on the other hand has a wider range of musicality. It can sound like a full band is performing! But I'd go for pipe if possible.