It's about Seagate's 1TB Baracuda 7200.11 vs. Baracuda ES.2 Both are nearly the same (ie rotation speed, cache, size) with the exception of the ES.2 being: -Business-critical enterprise drive, designed for 24x7 operation -Better at optimizing power consumption -Higher MTBF (1.2 million hrs. instead of 750,000) -Has Error control/correction -A bit pricier (roughly 40 bucks more) -BUT NO NCQ ?!?! -And a few other minor technical differences Question is, I'm getting 4 drives with the RAID card to do RAID 5 would you go with the ES.2 or the 7200.11? Does NCQ really make that much of a difference?