Meh. I don't get scared off from brands based on things like that. It was certainly a serious debacle, and I don't begrudge anyone the choice to shy away from Seagate, but it's ironic that Hitachi is listed as being a trouble free alternative, since just a few years before the Seagate debacle, the Deskstar line [then owned by IBM], went through a serious boondoggle of its own. We called them "Deathstars" at the time, if that gives you a hint. Pretty much every drive company has gone through its lumps to one degree or another.
For that matter, I had a Samsung 1TB that I RMAed back, and the drive I got from them failed to pre-clear properly, and I had to send that one back as well. That is an experience that could sour someone on a brand. But they handled it reasonably well, and I now I have a working drive, so it's all good.
The bottom line is that the Seagate LP has been outstanding as my unRAID parity drive. That's while running the CC34 firmware. I haven't seen from any source that the CC35 firmware is required for all drives. What I've mainly seen is stuff about trying to fix periodic clicking while idle, which is the drive recalibrating. And updating the firmware didn't always fix the issue. My drive hasn't done this at all, so I haven't bothered to try the firmware update.