Choosing an SUT?

I just was on the soundsmith site where Peter Lederman recommends a transformer with a 1:10 ratio and >470 ohms.
To answer the question about using the mc input on my Chinook the, answer is yes. I am doing as much research about them as I can.  I want to experiment to see if I can improve the sound. 

When I spoke to Peter Lederman about the SoundSmith cartridges his recommendation was a minimum loading of 470 ohms and preferably less (higher number). I subsequently acquired one of Bob Sattin’s Sky10 SUT that has a 1:10 ratio setting with 470 ohms or a 1:5 ratio setting with 1880 ohms.  I don’t currently have a SoundSmith cartridge but employ the SUT with a Kiseki Purple Heart that has an output of 0.48mV and performs well on either setting into my MM (44db 47k ohm) input.

Why do you need a SUT for 0.4 mV cartridge ? 

Hi,
+1 @chakster
i can understand it if you want to avoid the JFETS in MC input, that may give better sound but a gain of 60db should be more than enough. 

You bring up good points about the gain achieved by the Chinook.  Other owners of this phonostage have indicated the superiority of the mm side over the mc side.  With a transformer I can exploit this advantage.   It would be great to audition candidates to see if it's true.