Polycarbonate can be used, just expect it to have small bubbles all over it. PET-G moulds very nicely with low power vacuum systems and is wehat I would recommend, but as you have found out nothing is as tough as polycarbonate. PET-G is also slightly hygroscopic but nowhere like as bad as polycarbonate or acrylic.
The lower temperature that PET-G softens at also helps for home use.
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