Here I stick with a 50degC wash, a scoop of Drivematic and a normal dose of Huggie Fabric softener.
With the 1800RPM spin, I find there is very little softener left at the end of the cycle, almost no smell and the absorbancy is not affected. The white towels stay bright white, and the colours dont fade.
I recently changed the cycles on my Miele from the AU program to the EU program and have found an improvement in rinsing and a reduction in the vibration that I get on our wooden floor.
The Cycles have gone from 40minutes to 1:25, but the rinses now take 15 minutes each, and the spins are much more stepped.
The noticable improvement has been with towels, now when line dried, they have a fluffiness that never used to be there. Kind of what they feel like when they come out of my 1970's Miele.
Coming from a cold water only wash upbringing (20-25degC), the towels were washed once per week and we never had musty towels, and the world didnt end. The towels were always line dried outside, or on clothes horses behind the combustion stove in winter, so perhaps complete drying is a big factor in ensuring a fresh smell. The detergent was always SA8 or Coldpower.
Having said that, I now dont wash below 40deg, and occaisionally as high as 75. I prefer to wash at 40 or 50 depending on the cycle and run a maintenance wash at 95 every other month.