Kinetic ropes

If someone is familiar with kinetic ropes, or can make a recommendation. I have wrestled through various suppliers, who have all “the best product” … yes! So, vehicles are G’s with max. 3.5t own weight. We are mostly on the road with two vehicles, and have used “normal” towing ropes up to now. At a meeting I have now seen these kinetic ropes, which can be of advantage after all. So now my questions, whether someone can use them What kind of tonnage do the ropes have to endure? Here it is sometimes multiplied by 3 or also by 4. But what makes a difference (even in the price) whether you take a rope with 9t, 11t, 12t, or 15t. Then it is advised not to take too high tonnage, because you can tear something down with it. Thanks for every constructive thought.