I have the Phantom 4 .. also the Sequoia cam, also investing in the thermals, high resolution cameras for use in survey mapping, search and recovery .. for both research and coursework / training (GIS / RMS, Pix4D, etc) . I am torn with the inspires as I dont think we can easily switch the cameras/ sensors on the Inspire2? Was leaning towards the Inspire1? I am also obtaining a couple of the Phantom4Pros in addition to the Inspires. We will primarily use units to generate orthos and surface models for remote sensing, watershed modeling ... Any suggestions?