This makes as much sense as "RENTING is cheap - OWNING is expensive".

Especially when you compare 1 MONTH of rent vs 100% of the price of a house, paid in 1 lump sum.

Both business models are available. It's great as it gives options to the consumer. But it's a pretty weak angle as the main strategy to convert people from iTunes/iPod.

iTunes/iPod is more successful because software and hardware are perfectly integrated and easy to use. On top of that, design matters.

Western Digital WD TV media player

This NAS has a RAID controller to support RAID 5. So if you have a small office, I don't think that you are going to try and built that same box on your own to try and save $50. 4TB with RAID 5 for $999 and it works out of the box. That's a pretty good deal.

So the same weird shape as before? Can't stack them..

It does not look like they have air vents. I am wondering how hot they will get.

Looks like the RAID software manager is for Mac & PC.
http://wdc.com/en/products/Products.asp?DriveID=466

They have another drive like this with eSATA (+ Firewire & USB)
http://wdc.com/en/products/products.asp?driveid=410

You need to use this other WD drive for Scientific Atlanta 8300:
http://wdc.com/en/products/Products.asp?DriveID=334

Works also with TiVo HD and Serie3. That's what I have.

See the difference:
http://wdc.com/en/products/index.asp?Cat=10

There is a silver one (and 2 other colors) but it's a Passport Elite, not a Passport Essential

http://wdc.com/en/products/products.asp?driveid=408

Can plug it on your xbox as a movie library.

Looks like all the new mybook drives are fan-less
http://wdc.com/en/products/Products.asp?DriveID=410

Also it looks like this new drive has a 5 year warranty.

For NAS, WD has another product called My Book World Edition 1TB or 2TB - with 2 drives RAID 0/1.