I am not sure you'd consider it an upgrade...if you 'love' the 103r, why change it?
Something interesting would be to mod the 103r to p[ut a wood body onto it, like here:
http://www.theanalogdept.com/images/spp6_pics/Classifieds/Uwe%20Bodies/Bodies3-1.pdf
there is a review here:
http://www.audioasylum.com/cgi/m.mpl?forum=vinyl&n=694577&review=1
I would seriously consider something like that rather than going to an MM cart (especially when you like the MC)
Something interesting would be to mod the 103r to p[ut a wood body onto it, like here:
http://www.theanalogdept.com/images/spp6_pics/Classifieds/Uwe%20Bodies/Bodies3-1.pdf
there is a review here:
http://www.audioasylum.com/cgi/m.mpl?forum=vinyl&n=694577&review=1
I would seriously consider something like that rather than going to an MM cart (especially when you like the MC)