Masterplan, I suspect that you would get far more bang for the buck by improving record cleaning first. Going from VPI 16.5 record cleaning to ultrasound was a bigger difference, for me, than going from high end MM to higher end Koetsu.
The added advantage of record cleaning is that you are likely to increase stylus life, because the grunge in the record groove tends to contain diamond dust. Or so I have read. YMMV
The added advantage of record cleaning is that you are likely to increase stylus life, because the grunge in the record groove tends to contain diamond dust. Or so I have read. YMMV