I have a Phantom 2 with original GoPro and ground station app and Bluetooth. Also a Phantom 3 Standard. Have not flown yet in the DR. I am concerned transporting batteries on the plane.
"Bang for the buck" matched with "needs" are another.
Price is also a consideration. The "Fly More" bundles cost:
Spark
$500
Mavic Air
$1000
Mavic Pro
$1000
Mavic Pro Platinum
$1400
A business partner has an Inspire with serious 4K camera I can use any time; I just have to take responsibility for a spendy device. But since my needs are limited to shooting 1080p@60fps, no real need to go 4K, although a 3-axis gimbal is an attractive feature.