Coincidence this thread popped up.
I have a WD Elements 1TB right now (bought it for $115 on Amazon; watch out for cheaper on slickdeals.net).
I've had it since around March, and it is perfect. I originally thought there wasn't a power adapter, but it does indeed have one.
Still, it's amazing. I love it.
PS - It has 931 GB, not exactly 1TB. Just to let you know. I haven't even filled in 1/4 of it yet.
😀