Metal Back Box Clips

[securespark]

Decided to replace the dry lining boxes after having the HS&L skimmed with metal back boxes.

I know they're fairly new, but I've managed to go my whole career without using them.

In your humble opinions, which are best?

 

[SUNRAY]

Without these?

Iffy

 

[securespark]

I'm wanting to fix metal back boxes into a hollow wall (Paramount), but not sure which are the best fixings.

There's something called F Clips, but they don't seem the best.

I suppose I could splodge a load of bonding in there, but it seems a bit amateurish...