I have one of these in my HTPC and it's been pretty solid, though I don't have that many Blu-Ray movies at the moment. It just fit in the case too, though I had to use a right-angle SATA connector (Silvestone ML03 with an Antec Earthwatts 380W).
I just wish these things came with less gimped software (I think I picked up the retail version because it was the same price as OEM at the time). It makes it feel like an airline - always nickel and diming you...