Denon DL 103 vs DL 103R

Seems there are a lot of folks who love the 103, but have more mixed feelings about the 103R. Denon seems to thing the 103R is an improved version, which doesn't seem to jive with the popular opinion. Anyone want to offer a few opinions on these two carts (as if you wouldn't)?

Also, how would they compare to some higher cost cartridges? I'm also reading up on the Grado Sonata Wood and the Sumiko Blackbird, recognizing that I might need a phono stage with these. Any other suggestions are welcome.

Thanks