I'll second Rex's recommendation of the Grado Platimun on the MMF5. It made a significant upgrade on mine over the stock Goldring. I'd also suggest replacing the stock felt mat with a Herbies Way Excellent Turntable Mat: http://herbiesaudiolab.home.att.net/ttreview.htm
These are all easy changes which will take the MMF5 up several steps on the refinement path for a modest investment.
These are all easy changes which will take the MMF5 up several steps on the refinement path for a modest investment.