The H99E is superior for protection and padding of all-important and delicate items. This is similar to the charcoal colored foam rubber used in camera cases. H99E foam out performs all others for the required protection, padding and packaging of high tech tools and sensitive equipment.
LL32 is a versatile, low-density foam rubber used for many applications. Ideally it is used for foam padding, packaging, soundproofing, guest beds and too many other applications to list.