DaVinci Resolve Studio is the way to go. Something that no one has mentioned, the future upgrades are all free, not like other software where upgrades to a new version are paid for again.
To echo what everyone else has said, Da Vinci Resolve is on of the best values out there for what it does. If you buy many of the Black Magic accessories or cameras, you get it for free, like their speed editor or Black Magic 6k cinema camera so...
Agreed. DR is the best bang for the buck and the easiest to use/learn IMO. Also, what you are using for a computer matters. Processing power. Mac Mini Studio for me.