The dark one :)
I'm in the same boat (and I own paid products I've got a foundry and FG ultimate licences) but in the end I use the free Maptools more often than the other two.I use MapTools because it's free, I've been using it on and off for nearly a decade (obligatorily shakes cane and tells the younger VTT kids to get off his lawn), I'm too cheap to spending any money on a program, and I'm only using really heavily using digital maps because I've no other choice due to the plague.
A less snarky, yet equally cynical explanation: I prefer that MapTools is basically the unspoken hero of VTTs. So long as you know at least the basicas of how to script/code it's basically the best kit out there for modding the game as you want, especially if you don't want to deal with corporate licensing frustrations / asinine subscriptions and pricing schemes, especially if all you want is a dang map with tokens on it.
Have a folder with maps, one with object, one with token? Nice add them to maptools library drag what you need, the map is done...it takes a little more time to add vbl though...but if you use simple gm revealed FoW then your map is done.
Also it can import maps made in dungeondraft with vbl already applied.