OP
Ponty Massive
I know this thread is years old lol, so apologies for dragging it up, was just something I came accross.
But I also find them great for use on solid core cable, as above shown in the picture.
not only do they look more professional, but the twin entry ones are great for use inside the consumer units for ring circuits... and I also found while not usually a problem, solid core cable gets crushed slightly as you tighten the screw leaving an imprint from the screw.. if accidentally overtightened then it can lead to failure of that connection on thinner cables like 1.0 or 1.5 so I found these offer a little extra re-inforcement.
Until you need to test or split the ring!!