2xRAID vs High Performance Drive

i like that seagate 7200.12 The caviar blacks seem to have a bigger cache though. But i've been looking online and that 7200.12 is the newest generation of hard drives released (1/20/09) and idk maybe its a better choice?
 
what about wd's RE3 series? are those worth paying extra for?

btw Im planning on buying a hard drive tonight
 
what about wd's RE3 series? are those worth paying extra for?

btw Im planning on buying a hard drive tonight

This is from Toms on the RE3

WD's RE3 is an Application Drive

The new RAID Edition 3 (RE3) drive from Western Digital was more convincing to us for use as a system drive. Although it is limited to a 110 MB/s throughput, we consider this still sufficient today. The real strength of the RE3 drive is its very quick access time and high I/O performance, which beats the entire 7,200 RPM hard drive competition and leads to nice levels in the performance per watt measurement.



source.

http://www.tomshardware.com/reviews/Seagate-Barracuda-1.5-TB,2032-10.html
 
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