I just received my unit today, and after some quick troubleshooting, got it up and running lickity split (BAD Emisoft.)
So I threw my first drive through its paces. First drive was an Hitachi HTS545025B9A300 2.5" hard drive. The drive experienced a rapid failure, which appeared to be mechanical. The client had realized a failure had started so attempted to back up their photos, which seemed to have caused further issues. The client did not want to pay the cost of a specialist (Sorry lcoughey) and instead accepted whatever I could get, was it. Through 73 bad blocks (multiple session failure) plus more weak blocks cropping up, I'd ran ddrescue and got all but 9 of their photos and all their documents and such. I had already applied for this demo, but didn't want to hold my breath for a hardware failure, so the client was okay with this.
I couldn't quite pin what the issue was, but the drive was making abnormal sounds. RapidSpar reported the head was 100%, which threw my suspicion out the window. I used RapidSpar to specifically target the files I wanted, and sure enough, no issues. At all. On the contrary. Pulled all the photos, and they all open fine. The client will be tickled to get these back.
For giggles, I did a full photo recovery just to test and oddly, RapidSpar didn't even struggle. If it weren't for SMART and the odd sounds coming from the drive, (And a bit of permanent marker) I would have thought I had the wrong drive. 88GB in 53m, no errors.
First attempt: Positive. Will try another drive tomorrow. Tomorrow's seems like a firmware issue, so we'll see what happens.
Edit: I wish the logs were a bit more descriptive. It pretty much treated the drive like nothing was wrong, so I can't even tell if it struggled to recover anything.