Things to avoid in data recovery
This is a short list compiled based on the tech support experience,without much explanation Avoid USB-to-SATA converters (for bad reliability); Marvell chipsets (for bad handling of bad sectors); Silicon Image controllers or any RAID cards based on these (after SIL_QUIRK_MOD15WRITE; even if SIL_QUIRK_MOD15WRITE does not apply to your controller, this is not an excuse to use Sil); nVidia chipsets (for bad reliability of disk controllers under load)