I've looked at Killarney because it borders the bay where we have a cabin & some of my son's friends have thought about canoe camping there, using our place as a launching point.  I introduced them to canoe camping in Quetico, so I'm interested in comparisons.  I know it's a wilderness park, and I know many lakes are dead due to the old nickel smelter in Sudbury, so fishing is probably not as good!  I've done the online searches and have maps so I know the portages are relatively long.
But any first hand info would be appreciated!
-Tom