Betaflight vs LibrePilot

[DavidKersting]

Been using LibrePilot on my CC3D boards. I would like to try Betaflight on my new drone. For starters, I am new to Betaflight (and no pro on Librepilot either). Tried to flash the board on Betaflight but dont see it in the drop down list???
Arris X Speed 280X with:

Ultimately, Im trying to get the options of Acro for FPV, Angle for LOS and also Horizon for LOS set up on toggle. I havent figure this out on LibrPilot and heard Betaflight offers a more user friendly set up???

 

[HighTechPauper]

The board should already have some rev of BF on it, download and install the configurator and the drivers and plug up and connect to the board in the configurator and look for the FC target type to know what target it uses