Disclosed herein is a thermoplastic composition comprising a combination of 10 to 80 wt. % of a polyester and 10 to 90 wt. % of at least one two polyester-polycarbonate copolymers comprising, based on the total weight of the copolymer, 10 to 95 wt. % of arylate ester units, and 5 to 85 wt. % of aromatic carbonate units. Also disclosed is a method of forming the compositions, and articles prepared therefrom, for example transparent covers.