What is the softest Jconcepts tire?? Super soft?? Indoor super soft?? Mega soft??

I currently run AKA chainlink supersoft but don't care for the EVO style bead. I bought a set of Dirt Web indoor soft and I find the quality to be superior. They spin so true and smooth and straight and I prefer the 2.2 bead. No vibration at all. They just don't hook up. At all.

So which compound is softest or similar to or better than AKA supersoft??