First off, don't listen to anyting Tauron says.
WD makes a good drive, you really can't go wrong with any of the consumer line-- Green, Blue, or Black. Personally I'd go for Green as it's quieter and a bit less power hungry than the other two, but if you want more speed go for the Black version. For a balance, go Blue.
I also like Seagate, but they've been having a few firmware issues as of late.