Hi musicant,

Personally, I don't find anything wrong with using the Barre F, the only issue is when playing in the open position at the very top of the guitar, barring the F might be more difficult when trying to switch around to other chords.

For example if you had to play this chord progression:

F D G F

Then it might be difficult switching from an F Barred to a D open chord to a G then back to an F Barre.

The four-finger F is only used as an open chord and it's easier to use that F since you can use your index finger as an anchor finger to switch to other chords. It's good to learn them both I think.

Could elaborate on how the "index finger twist" means?

- Billy