We are getting ready to order and have installed slide toppers. I did not want the factory install units so we waited until we got home to decide what we want. We are leaning towards Carefree Ascent or the Slide Out Kover 3 but we are trying to decide what fabric to get. The options are Vinyl (Standard), Acrylic or Polyweave. Our past two units had vinyl slide toppers and they lasted about 5 to 6 years before needing to be replaced. I would appreciate any information anyone could give as far as how the Acrylic or Polyweave material would hold up compared to the standard vinyl.