Never heard either of these, but have had a few other Naim CD players (currently),and a Linn Classik. Also various Linn and Naim preamps/amps.
I think the Naim will be more punchy and forward, the Linn will be a little more laid back. Both are great rythmic machines.
A toss up depending on your tastes.
I would probably go for the Naim, as I lean that way anyhow.
This question gets much discussion on the Forum at Naim-Audio.com Try there.
Good Luck!