Initials = hard parts that don't absorb water, but eventually shrink distorting towel shape.
Softener = wax, impedes absorbing water.
Towel cycle
Wonderful fresh washed smell.
Smell wears off, essentially no smell.
Towel starts smelling like you.
Towel smells like vacuum cleaner bag.
Not all people prefer the same types of towel, buy one of half a dozen good types and see what you prefer before stocking up. Rejects = guest towels.
Fieldcrest premium line was Charisma, second line might of been Royal Velvet, but could also have been JCP.