Summary: The RMA process with ADATA has been annoying. I called, and was told it was after hours and RMAs were not available by phone anyhow, but I should try resetting the drive's controller "a few times" by powering it up with no data cable connected. This didn't do anything - and even if it had worked, I'd still think I had a defective unit.
Pros: Seemed fast (didn't have a chance to benchmark it). When it failed, it didn't catch fire or take out the motherboard.
Cons: Failed after about 2-3 hours of usage ... just enough time for me to get a new home theater system set up and updated, then have it die on me. Unfortunately right after the initial Linux Mint installation was done, I cleaned up and threw away the packaging, so was unable to return to NewEgg... oops.