Recently purchased a DJI Phantom 3 Advanced. It truly is a great platform, reading up on Eric Chens site Skypixel (Worth it to navigate), he suggested a Duratool MJ-139-20.5 Weatherproof Tool Box case for Phantoms. I was able to use a different one, supplied by MCM electronics (Links below)
Found on Amazon here:
http://amzn.com/B00QPQLWO6
Or MCM Electronics
http://www.mcmelectronics.com/product/22-24120
MCM has a lot of discounts so it’s pretty great getting a decent case for $50 bucks. Sure it was a little bit more work getting everything cut and setup but if you have the time, I would say go for it. I did have to cut the top foam piece to make the Phantom 3 fit comfortably. The Seahorse SE-920F looks solid if you’re looking for an alternative case.