Well thanks for the information. I think you rating scale is interesting, and if differs a little from what I've heard.
I've seen posters here say that the 2250 is better than a Klout. The Klouts are still very expensive to the point of being a little unreasonable. Of course, maybe they are that good.
I've also heard a Linn expert at a well respected dealer say the all of the newer amps including the 5125 are better than any of the LKs. The guy wasn't trying to sell me anything, so I think it was his true opinion.
One thing I like about the 5125 is the odd number of channels. There are lots of ways to get 4, but not too many ways to get an extra channel for a future center channel. Of course I could always aktively drive a center channel speaker with a 2 channel amp.
The good thing about all the Linn amps is they have the same gains so you can mix new and old.
In the end, if I choose to go with LK amps, I will look hard for a pair of LK140s vs the others.