I made the switch, got the 930 when it came out. I came from the iPhone and before you give me jip, i moved because i wanted colour and excitement back. I've been watching the WP OS for a long time and when the 8.1 came out i thought it was the best time to change.
The 930 (orange, better than iPhone already) is great, bigger and clearer screen, great camera, better battery life to name but just a few. The software is fresh, its great in some areas, good in others and behind in others but that makes it exciting to get an update. Windows are onto a winner, if they keep up the updates.
I dont regret the move and I'm glad i did. I recommend the move to all my family and friends.