Acrylic or stone resin shower tray?

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I am fitting an en-suite and am looking for a shower tray. I would like a low profile tray and most of these seem to be acrylic. Are acrylic shower trays any good or would I be better off with a stone one?

Thanks for reading.

 

[AngelesPlumbing]

Yeah its alright, make sure you have at least 8mm to 10mm of sand cement in bedding

 

[muggles]

Stone resin every time, no idea where you're looking though - most low profile trays I've come across are stone resin, it's quite hard to find an acrylic one...