I have the S model. I really like it although after getting the I1 it's hard to go back to the anolog SD video!
I have the matrix setup for long range flight (shhhh) on 1.3 video with Dragonlink control and gopro with gyrox 3 gimble. It's faster,more stable,longer flight times, etc..etc but the ease of setup, hd video, 360° camera rotation and everything integrated into the pilot app keep me flying the I1 most of the time.
I think I'll be looking at HD video for the matrix real soon!
(No restraints)