The Startech device is handy for when drives come in and seems like nothing is wrong. You can set how many bad sectors to hit before it stops and shuts down, that way I know pretty quickly if it's a logical issue or bad sector related. It's by far the fastest drive cloning method I've found yet for healthy drives. And you can get it cheaper on Newegg: http://www.newegg.com/Product/Product.a ... -_-Product
I'm a Startech reseller, yet I can still get it cheaper from Newegg than direct from them (which is why I've given up doing business directly with them).
I've actually considered getting a few more of them to have on hand for when larger RAID arrays come in, but haven't had the funds handy yet.