I've been flying the Spark and Phantom frequently, I still really love my Spark however I have also fallen in love with the Mavic Pro. Only thing I noticed is lack of some of the quick shot options vs. the Spark, that is a downside. Better quality pics, better video, surprisingly easy to set up (spark of course is easier as I can pull it right out and fly) and the range of the MP is AMAZING! Here are my first shots, all taken in Spokane WA.
Church of God (as you'll find out I love to shoot churches and love angle shots. You can see my Spark work on the Spark forum.)