Disclosed herein is a thermoplastic composition comprising a combination of 10 to 80 weight percent of a polyester, 5 to 50 weight percent of a polycarbonate, and 10 to 90 weight percent of a polyester-polycarbonate copolymer comprising, based on the total weight of the copolymer, 15 to 95 weight percent of arylate ester units, and 5 to 85 weight percent of aromatic carbonate units. Also disclosed is a method of forming the compositions, and articles prepared therefrom, for example transparent covers.