Samsung is best avoided and WD which was once the best choice is now full of problem and even the RMA process is a pain .. See the threads in the forum
Use to hear a lot good about WD 1TB but after seeing all RMA incidence on forums its not good choice..as far seagate 7200.12 is consult using 500GB 7200.12 for last few months...got great performance....amazing speed..never saw in WD(but don't known about WD 1TB 64MB).....+1 for seagate this time..... ya but if some one got WD green 1TB 64MB let them also post their views...but again RMA issue....next is your choice...