I had my first flight tonight with the new firmware and GO app. The new functionality has really brought back the pleasure of flying, photography, and videography. Home Lock is something I really appreciate. I used it a lot on my phantom 2. I'm glad it has finally made a return. I don't have any other app to compare it to, but the POI works well for me. I believe I will be using it a lot. I'm not sure how much I will use waypoints. I'm also pleased to say I am now experiencing practically no video lag on my Samsung Galaxy Tab S 10.4! Thank God!!! The joy has really returned to my flying! Thanks DJI!!!