NAS for Sonos
I'm looking to buy a Sonos bundle and would appreciate anyone's experience of the best value NAS to go for. As far as I can see, What HiFi give rave reviews to the AVA RS3 but it retails for about £800. I've also read about the Buffalo Linkstation Pro which costs a lot less at about £200.
Assuming I rip CDs on my computer and put it on a Buffalo Linkstation, what's the reason for buying the AVA instead?