I have a CS407 and I love it. My brother-in-law has one of the Infrant/Netgear ReadyNAS box, and he says good things about that too..
One of the nicest features for me on the Synology box is the management SW.. the UI is really something that needs to be seen, and one of the best uses of AJAX I've seen.
A commune is where people join together to share their lack of wealth. -- R. Stallman