Got my P3 Pro today and the first thing i done was see if my pv2 backpack fits the p3, it fits perfectly along with the tx with no cutting of the foam required and room still left at the top of the backpack. I really like the backpack as its very well made with enough storage but still compact, very comfy to wear and it holds everything very securely, there is a strap that holds the tx and a big x strap on top of everything that clips together, a big net pouch in the lid holds my launch pad too. I purchased from firstpersonview for my v+ but its good to know i can keep and use with the P3 so the v+will be sold without the case now. It cost £100, there are much cheaper copies on eblag but i see they are much inferior quality. A good review here, they have since been updated though and now also include the straps i mentioned. Here my P3 Pro in the backpack. PV2+ V3 in the backpack. P3 Pro and PV2+ V3 together.