Ordering a ReadyNAS with any disk EXCEPT Western Digital?

I'm sure I read somewhere that WD had bought out Seagate anyway, so they are probably effectively the same technology and factories producing both brands by now. I have found Seagate Constellation drives to be very reliable in the past, although they really do not like sudden power loss as I had two develop bad sectors from power cuts (in a ReadyNAS Duo V1 on a UPS), after this I upgraded my UPS and several power cuts later have not had a repeat failure since. I have also used Samsung and IBM drives in single external disk enclosures without any problems.