I've been using Winbond W27C512 chips for a while now, most of the fake SST 27sf512 chips on ebay are the winbond chips re-labeled. The big problem is if you have the Moates programmer as it only "supports" the SST chips for erasing and programming.... I have the MCUmall GQ-4x so I can flash either and even flash the stock chips after erasing them with the UV light.
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