Based on English VA's - I would personally prefer Amy sounded like either Jennifer Douillard or Lisa Ortiz's take, keeping upbeat and energetic voices, with a nice girly feel them.  

Amy is a pink hedgehog with a big heart and an unrelenting yearning for Sonic's affection on her own terms. Though generally good natured, she gets hot-headed when riled, and her weapon of choice, the Piko-Piko Hammer, can always be relied upon to make her feelings clear. She missed Sonic while he was away, but a lot can change over time.