Figured warranty and/or RVS (Rotation Vibration Safeguard) would have been mentioned, as well. Consider warranty to be an OEM's confidence in their device. Bit on RVS, Cost math on price can be interesting. As an example, a device getting twice the value out of a set of Red drives vs RE drives. SMBs would be more of the mindset to take the lowest price (yeah, yeah, not enterprise).