I don't like the version of 2. those folding brackets are junk. I was weined on the flip out style.
Try to re-use those if you need to pull another wire or something.
I don't like either- I would rather use madison clips.
I've really never had any luck with these.
What kind of issues have you had? Only time I have seen problems is with you have a outlet that gets alot of use and plugged into alot. The Madisons can dig into the back of the sheetrock and it can loosen up or break the sheetrock.
Third vote for the madison / battleship / box support / f-strap / ice skates / rabbit ears / steamboat / two men in a boat / hold-its / box cleat.
The U-grip and tiger are dedicated boxes, and cannot be used for much else other than old work. A standard box has many other uses, and keeps me from having to carry a bunch of different types of boxes around on the van.
I'll add the sixth or seventh vote for the Madison Strips.I vote for the same, but I thought they were Jiffy Hangers or Patton Hangers or Madison Straps.
I don't like either- I would rather use madison clips.