I'll be buying a case for my P4 in a few weeks and I'm doing some research to see what's out there. I came across this one and it looks pretty decent but photos don't tell the whole picture. Has closed cell foam which isn't as soft as open cell but also doesn't hold moisture like open cell and should be a bit softer than the styrofoam case the P4 came in. The price is attractive but only if the quality is there which is why I figured I'd ask to see if anyone has experience with cases from this company. I looked up the same case for the P3 on Amazon and it has 56 reviews @ 91% 5 star which is a good sign.
DJI Phantom 4 Drone Case | Case Club
DJI Phantom 4 Drone Case | Case Club