I was talked into a 135 when I purchased Kristy. It's fine in anything over 10 kts, and furled in about 3 ft it holds its shape well and is great in up to about 20kts. In light air it isn't enough.
It is Dacron with spectra in strategic places and has held its shape well for ten years.
If I were to do it over, I'd get the 150.