I have not had many problems with LaCie products and when I have (a DAT tape drive), I found their customer support to be phenomenal. With that said, I usually buy Maxtor or Seagate hard drives. LaCie tend to be a little expensive and if I want to pay a litttle extra, I'll buy a Seagate, because their drives are awesome. If I want a bargain, Maxtor is good. And of course Seagate just bought Maxtor...
As for that other drive, I would never buy a generic hard drive. Hard Drives and RAM are two things never to skimp on. If your hard drive dies, thats it. Your data is gone (unless you back up). No warning, nothing, gone.