My 1.5TB drives from the first available batch are running fine, though I've been meaning to update the firmware for a while. Of course, they're in the ReadyNas and have a spinup count of 6 or something last time I checked.

The interesting thing with these drives is that the size is so large, their started error rate makes it highly likely that you'll hit unrecoverable error while copying the contents off once.

I'm glad I'm not a hard drive designer, it's really amazing that they work at all.