The NAIM ND555/555PS (the 555PS is an external power supply) is considered a superb streamer, in fact, Hi-Fi+ awarded it 'the best streamer on the market currently.' It's $15K cheaper than the Linn ($24K). Still not cheap by any means..
I have also read a very glorifying review about the Linn.
Both are out of reach for me..
One great alternative for a great streamer is the moon SimAudio 360D ($9K).