@Crusty181 I bought a Phantom 3 Advanced, the savings over the Professional paid for a couple of extra batteries. I didn't have anything that was capable of displaying 4K when I bought it, but have since bought a new 27" iMac with the 5K Retina screen.........meh...
I mainly use an Ipad mini 2 for my FPV setup, but have used my Samsung Galaxy Note 4 phone on the odd occassion.
Personally, I prefer the iPad as the DJI GO app seems to work better on iOS than Android.
There are 3rd party apps available but I'm happy with the DJI system, that also restricts altitude to 500m, it just won't go any higher, I've tried...hehe.
I've flown it out around 1.5 to 1.7km so far, at that range I start to get a little nervous as it's gone from my line of sight and I get the odd "weak transmission" warning on the app and lose video for a second or two, but it always comes back.
I trialled the new Intelligent flight modes on the weekend. See short vid below. It works well. Didn't bother with waypoints though, I don't have a need for it. Feel free to ask any questions about it. You need to get it up and fly it when you get it. Happy to show you too if you'd like.