A 2.8mV cartridge will work fine with your Musical Fidelity integrated. I agree with others that you should listen to the built-in phono stage before you start upgrading. At the very least, it will give you a reference point to move forward.
The Dyna 20XH is a very nice cartridge. There's no doubt about that. I haven't heard the AT150MLX, but it gets high praise from owners. So does the Nagaoka MP-50 that Raul mentioned.
The Dyna 20XH is a very nice cartridge. There's no doubt about that. I haven't heard the AT150MLX, but it gets high praise from owners. So does the Nagaoka MP-50 that Raul mentioned.