I have an NAD 533 (Rega Planar 2) turntable with an RB250 tonearm, an Origin Live Counterweight modification kit, the Iron Audio acrylic platter and a stock Goldring Elektra MM cartridge.

Am I better off sticking with MM in the $300-400 range, or can you suggest a good MC cartridge compatible with my tonearm? I've looked at the Goldring 1042 and the Clearaudio Aurum Alpha MK II MM cartridges so far.