The RED drives you are refering to actually have some of the worst reviews around compared to even normal consumer drives. (Source: newegg reviews you mentioned)
About half of the Newegg reviews are 3-eggs or lower. And even some of the 5-egg reviews mention dead drives! They only got 5 eggs because of Newegg's easy return policy. The drives are clearly unreliable.
http://www.newegg.com/Product/Product.aspx?Item=N82E16822236...
http://www.amazon.com/WD-Red-NAS-Hard-Drive/dp/B008JJLZ7G
been running 3x of these in a raid-5 NAS, no issues so far (not that it's any kind of indicator on a system which idles as a backup all day)