Do yourself and buy a Spark now for around $300 - $350, or an Air or Mavic Pro later. I would skip the Phantom line altogether at that price point.
There is no such thing as a
Mavic 3 4k. At least not until 2020 or 2021. The latest model is the
Mavic 2 Pro, Zoom, or Enterprise.
There are 2 Phantoms that people mistake for eachother.
- The Phantom 3 Pro is a great drone. Dated technology but still fun to fly.
- The Phantom 3 4k is not the same as the Phantom 3 Pro with 4k camera. The Phantom 3 4k was a limited edition drone, didnt sell very well, and parts are hard, if not impossible, to find. It has a gimbal not shared by any other Phantom. I would steer clear of it.