I have the P3P and the 4 I have enjoyed the 3 but love the 4 just as much if not more as the sports mode is awesome camera slightly better at night and overall color rendition I find it a little more accurate. As for active tracking it works but still has some work to be done on Dji part to...
DJI sucks huge use to have a bird that was dialed in now I have unstable 1500 piece of junk that I have to fight with to keep straight cuz these Dji idiots don't test there crap before hand and god forbid you have to call these idiots ..
Had a noticeable drift to the left and right now while hovering wasn't there before seems to lose signal now as well I have lost about 1500 m of distance ..
Only issue I have had thus far has been some drifting at lower hover heights of as steady as before ..she climbs faster brake turns seem slower on rotation distance has improved slightly for me and I am getting more SATs for GPS lock