Well your going to get some responses to this thread both good and bad.
From Pittsburg you can get to both places by flight via Winnepeg then either drive to Red Lake area or do another puddle jumper flight. Myself I would make the drive, talked to a fellow that did the flight thing and his buddies beat him home one year.
My vote would be LV trip but because you want someone else to cook that narrows it down to Nungesser. Again myself I would rather be involved in fixing my meals and normally eat walleye every night except one and don't find the packing in food for the trip is that big of a deal, heck I would almost bet Brett at Sportsman's would fill your grocery order and have it waiting for you when you got there.
I did the LV trip about a month ago (20hour drive from Dayton Ohio) and guarentee that I will return, can't comment on the Nungesser but I've heard the fishing is just as good there, but I'm sure some one will chime in here and give you the what for.
To me you have picked two fine places to choose from.
Good Luck in your choice
Whopper