best choice cartridge for my Lamm LP 2

I have changed my amp to a fully balanced amp and when trying an active balanced linestage last week realized that my Ruby 3 did not quite have enough gain in order to make things come alive in the system. My line stage will not be the one in question, but I probably am looking at needing a better matching cartridge with the LP2. Any suggestions for a good MC for Lamms 57 db, 40 ohm load MC settings. I heard that dynavectors $ 4200 offering may at times have more than their standard .3mv. I am open minded to any suggestions