Agree re the ultimate transparency of Linn equipment. I too am a recent Unidisk SC/5125 owner after going throught the continuous upgrade cycle from a Classik to a Classik Movie to the SC/5125.
Painful that the SC doesn't have a standby mode though!
I am not a Linn speaker person myself. I value Dynaudio speakers for much the same qualities as Linn (accuracy, detail, transparency) and love my current pair of Dynaudio Special 25's.
My greatest Linn moment came just recently when I went a little crazy and bought a second hand Linn Klimax Twin amp (from here on the 'gon). Let me tell you, this thing is *amazing*. It has propelled my listening in to another dimension. I won't bore you with superlatives, but suffice to say, if you can find a Klimax Twin just buy it.
Power specs are the same as the 5125 per channel but that doesn't mean a thing. The sound takes on a sense of immersive reality. I dare not even start thinking about a CD 12 and Klimax Control pre-amp etc or I will be divorced (my hi-fi is already worth more than my Wife's car!)