Probably Barnes. Wiggs I have generally said is awesome at individual scoring, but he really blows in almost everything else. He hit the boards which is nice, but how can a player take that many shots and not pass the ball? It makes his team really easy to defend imo, and I really think there is some meta stuff that makes the players around him try less hard on defense while being less involved on offense makes them play worse.
I have nothing tangible to back this up, but then I watch Lebron play and think otherwise.
I still take a lot of 3+D guys like Midds/KCP over him for that team, and yes I may be stupid. (Although I bet JTM agrees). I have a real disdain for high-usage guys who can score well but not shoot or pass, I don't think we've seen them be that successful in a team environment unless they are in the Mark Aguire/Adrian Dantley role, and even then that could be getting phased out.
Also
here is an article on the Nuggets change in defense this year. I've been trying to post less Nuggs stuff this season so just ignore unless you are really bored.