The FR5e also looks interesting for a MM.
andremusik, Glad to hear that someone else shares my observations of this magnificent cart and yes I do use and prefer SUT's as they are absolutely magical with LOMC's.
My current SUT is the Audio Technica AT 700T which houses two large toroidal transformers. This was 75,000 yen back in the day so it was up there with the quality of the top Ortofon and Fidelity Research models.
In fact I did own a beautiful condition Fidelity Research FRT-4 SUT which I used briefly with the FR-1 but whilst the playback was very detailed, it was not as rich and engaging as it is with the AT 700T.
I am currently on the hunt for the limited edition AT 1000T SUT which is a beast of thing at 10kg's. If I can snag one for around $800 i will be a happy man.