Every so often I come across a hard drive that is beyond recovery through software. I mean beyond that of good programs like Stellar Phoenix and Nucleus Kernel that will scan a drive with no recognizable partitions. When asked for a referral I don't know which professional data recovery firm to refer them to. I'm talking a real firm that has a clean room and microscopes. That can change drive heads, boards, and motors. Those that do not guarantee all data recovery for $149 (these types are about as reliable as craigslist ads for new Macbooks at $199). Which U.S. based companies would any of you recommend? Have you used their services? Do you recommend friends, families, clients to them? Just a couple years ago there was just one or two companies that did this now there is a glut of them. I would like to separate the chaff.