Between Silk, Satin and Cotton?
Cotton can often be stronger than silk in some cases, as silk does require extra due care and special attention to ensure it retains its durable properties to make it last. But silk has a natural thermometer that helps cool you down in the hotter weather then amping up the insulation when the temperatures drop. To get that effect from cotton you have to add or remove layers.
Silk is the same on both sides, while the manufacturing process leaves satin with a dull flat back. Satin is shrunk or Stretch whenever we just wash in hot water. So be more careful when you just washed your satin fabric. You always checked and watched the washing instructions label which is coming on that fabric.
If you wish to repose in pure luxury, then silk is the way to go. Your hair, skin, and inner natural beauty will thank you for it.