I think among the Belgians, Kim stacks up best against Monica (or nearly anyone).
I voted for Justine though. The great number of times Justine has played Monica compared to the small number Kim has seems like more than coincidence to me. I think Justine for some reason will play Monica a lot more times than Kim will, and probably break through eventually.
Well Sabine came close in the past, so did Justine and Kim not so long ago. I think it will depend on which surface they play her. If it's on grass I think both Kim and Justine are able to beat her. It will be tougher on the other surfaces. Kim might do it on hardcourts and Justine maybe on clay, although that's alos Monica's favourite surface...hmmmm tough one....
I'm going for Justine then for the same reason as DH.