So, I know this will be a bit of a debate, but I am looking for my first real drone. I have a small cheapo one I have used to train on (cheap to crash ), but want to get something real now. I am planning on using the new part 107 FAA rules to operate, focusing on real estate photography and video, however also working in crop and farm management. Eventually I would like to get into IR work also, but that will have to wait a bit. All that said, I am really looking between the P3 Professional and the P4. I have toyed with the idea of even going to a P2 (IR would be easier), or an Inspire 1. So the field is really open.... I am paying for this out of pocket, so $ does count. I will get lessons from a certified school locally who trains the law enforcement for the area to fly. I am quite willing to go pre-owned, but there are so few p4s used, that the P4 would probably be new. Thoughts on which would be best? Pros and cons of each?