can anyone please explain the difference between #2, & #3, other than apparently #3 uses crippleware (500 ceiling minimum, NFZ, etc)? in what ways is it better (aside from apparently you can get the 4k camera)? thanks!

Here is an article on the differences.......it does not include details in the app settings since we can't confirm all of those...
http://www.droneflyers.com/2015/ ... ntom-2-vision-plus/

It's an evolution of the P2V+