NC Prospector 15 works well for me up and down the rivers in NW WI. It responds well, but nothing like a Phoenix, which I found to be small and too tippy for fishing or use with a dog. The Prospector moves out upstream with a double blade real well. Wind is the achilles heel of the P15. I haven’t been out on a big lake in strong wind, but having some moveable ballast sure comes in handy on the river. This spring, I’m trying kneeling at times, and a longer paddle. It will certainly handle a larger paddler better than a Phoenix, which feels almost like a cockpit. Nothing wrong with a Phoenix, it’s just very narrow and responsive and I want a little more room and stability, and I’m not that big.
I owned a Wilderness and loved it. Wish I still had it. It wasn’t a river boat, but on gentle deeper rivers it would serve well. I felt it was a tad small for a tripping boat, and heavy in the tufweave layup, so I replaced it with longer kevlar solo for lakes. Neither of the boats you mention seem to be ideal for rivers, except maybe big slow ones. I can catch an eddy or power upriver with my P15, and tossing an anchor overboard in a current doesn’t feel like a risky proposition.