I am about a week into using the WD Live and so far it's pretty awesome.  I haven't done the US Streaming stuff yet but am really pleased with the interface and the streaming from the local drive (2TB WD My Passport).

Also, there's a free app for iOS that mimics the remote.  MUCH better for using a keyboard, I highly recommend it!

Will report back further in a little while as to longer-term usage, but so far so good!