I've had an Inspire the past year but would like to get a back up drone. What are the big differances in the Phantom 4 compared to the Inspire. I know the basics and the obvious stuff. I guess on more of a technical end and features. I really like the avoidance system and I think I read you can lock on to a subject and it will follow. Am I correct on that? Is there anything that will drive me crazy flying the phantom compared to the Inspire? What will I love over it do you think?

Thanks everyone!

With new commercial rules coming into effect in the US in August, the P4's weight makes it much easier to use. (commercially)