Just came back from a trip to Berlin. While in a sports shop i saw some of the Elastikon's for sale and couldn't resist picking up a set. I went with the yellow 10 lb / cable set with the thought i could pick up the 25 lb / cable set later and have a good range of incremental adjustment.
I have to say they feel totally different than the Lifeline cables.
First i think the yellows are accurate, one yellow compares to a Lifeline pink this just going by feel. At Lifeline's 30lb / cable rating and 'our' finding they are off by a factor of three, means they are about right.
However the way they pull is very different, the Lifelines seem to accelerate as you get the pull going, they feel for lack of a better word, stretchy.
The Elastikons feel very heavy, the pull doesn't accelerate in the same way, its like the cloth cover slows them down. They feel for lack of a better word more solid. This also makes the short pull distance actually less noticeable, and in fact it feels like a surprisingly complete pull.
They pull definitely bottoms out very quickly, i hooked up to a door handle to see how far they would stretch, and they stop like they are in concrete at about double length.
I don't want to say one is better than the other, they are just different, and in this case that's a good thing.