Sorry to revive this thread, but I also own the RT 81(although after today I may go in a different direction) and was looking to upgrade the AT95e. After research and weighing the pros and cons of overkill by installing a cartridge that outstrips the tables abilities I decided on the Nagaoka MP 110. Got the cartridge home...mounted it....so far so good. Now the frustration begins. Although Fluance advises suitable weights of 3.5g to 6.5g for the cartridge. What it should probably say is below 6.5g. There is just not enough weight in the counter balance to offset the weight of the cartridge and headshell making it impossible to balance the arm. After adding some carefully applied electrical tape to the counter weight I was able to get the arm balanced and the anti skate set up.
All this being said, the Nagaoka MP 110 is light years ahead of the AT95e. The AT had been broken in and was sounding as good as it ever has. Right out of the box the Nagaoka was much more musically appealing. Broad and detailed.
I'm happy with my choice.