"The 103R has a compliance at 10Hz of around 9cm/dyne - maybe more - which means it tracks and behaves quite well in typical medium mass arms."
That would explain why it seems to work quite well on my Linn Basik tonearm. I know when I bought the 103R I was not totally convinced that my tonearm was a good match, but once I heard the results there has been little doubt. I'm sure I could do better in regards to matching cart and tonearm, but it is a non-issue for me because the results currently are splendid.