I've heard them side by side on a couple occasions with the same cartridge (and alignment) in the same system. The XL sounds more like a direct drive to me whereas the M sounds more like it takes something from idlers and something from belt drives. I'm not sure if that description is meaningful. PM for more detail if interested.Hi, How close does the Kuzma Stabi M sound compared to your Kuzma Stabi XL4?