cartridge for a magnepan unipivot

One of the lower priced Goldring cartridges would go nicely on there. Won't break the bank, sounds good, is MM so it will go in any phono section.

I was thinking of a better mc...should I just get a new arm

No, you don't necessarily need a better arm. I was just trying to suggest a reasonably priced cartridge.

If you want to spend more, maybe a Benz Glider would be nice on there.

Just beware of the stuff like Koetsu or Shelter that might be too low in compliance for the older unipivots. Try to make a good match with the arm.

Thanks....but I just picked up a Denon 103D.

There are now some publications at Vinyl Engine about this arm and a discussion at the forum overthere.

Hmm.. Not MC- carts on this arm!