I could have gotten a 3TB Red Drive for about ~$120 but decided to pass on it, perhaps foolishly. But the point is that it was already possible to get it for that price. $120 vs $90 I'll take the power-sipping, three-year warrantied, higher MTBF rated (even though all MTBF is exaggerated), hard drive meant for 24/7 usage, unlike the crappy "2400 hour" rated Seagates you hold in such high esteem.
My hard drives go into 24/7 machines, not machines that work ~45 hour workweeks. So the Seagates in a software-RAIDed array that gets turned on only once in a while, or in an external enclosure, may be okay... but that isn't 24/7.
If a company is so worried about the cost associated with drives failing after 12 months so that it slices warranties down to one year, that isn't very confidence-inspiring. I use mirrors so I can't have two drives go down back to back; if I hit a bad batch of Seagates, I'm screwed. But the Seagates may do a little better in RAIDZ2/RAID6 arrays... just budget for them to fail... and after you do that, perhaps that $90 isn't so cheap after all. I mean if it burns out after, say, 18 months and you have to replace it for another $90 (because you need to rush delivery at whatever nonsale price it is at that point in time, unless you actually think it's a good idea to use a degraded array for however long it takes for you to get a better sale price), the real cost over that time is $180. $180 is more than $120, and even more than the $150 regular price of WD Red 3TBs.