My favourite opponent has a neoprene deepcut studios mat (deep space I think) - it’s very pretty without being garish, gentle on dropped miniatures and IIRC it was quite reasonable for the quality. They do a range from deep space, nebula, few stars to a black abyss (which I quite like). I’m envious and one is on my wish list for Full thrust.
Andrew
BeneathALeadMountain