The cartridge is not the problem, it is your suspended floors and the spring design of your turntable. Your remedy is a turntable wall shelf like the one below. I use one and it eliminates all foot fall problems. There are several brands and price points available the link below is just an example.
http://www.usaudiomart.com/details/649225190-target-wall-mount-shelf-for-large-turntables-or-equipme...
http://www.usaudiomart.com/details/649225190-target-wall-mount-shelf-for-large-turntables-or-equipme...