My advice is that whatever brand you use, always install an extra fan to blow directly on your harddrives (or if you have many stacked, directly between the cracks). If you keep them cool you keep them alive.
I had several hdd failures in the old days. Then I started investigating why this was happening and noticed that despite having normal case ventilation, harddrives were running hot especially if there were many of them in the same box (I usually do). After taking the habit of making sure the case had a slot for a harddrive cooler (and installing one, duh) I haven't had a single failure in years.
You can try to save data from your seagate by freezing it in a freezer overnight and then starting it and immediately copying as much as you can. They often work one last time before they're completely bricked.