Some years ago I upgraded (so I thought) my resident cartridge for a well-reviewed and highly recommended replacement. What was all the fuss about the latter I wondered - it sounded dull and uninvolving on my RB300. The I upgraded the RB300 for a Michell Technoarm (a much modified Rega RB250) and immediately heard why the new cartridge was so highly regarded.
Moral of the story: upgrade your arm first and then select a good cartridge to match it.
Moral of the story: upgrade your arm first and then select a good cartridge to match it.