I had the KLM 1/0 for a little while, and that stuff was pretty flexible, until I bought some of the Kolossus Fleks. Any wire I need is going to be bought from Knu from now on. I like the flexibility of it, especially in the engine bay.
I like Knu wire.. we installed some KLM this summer and it was OK, alot better than the Raptor "bamboo" i was using.. and recently i was looking for 17ft of Knu flex but Tapout sold me some 17ft hyperflex for $60 shipped.. definately an upgrade... its like a limp noodle.. if i ever kill myself i'll just use that instead of rope.. Kicker hyperflex is the greatest.. I seriously wanna use some flex in the future