but I also don't think he has much chance of being a bust.

He'll will be one of those dudes that works hard, does a lot of the little things (rebounding, taking on the tough defensive assignments at 2/3 or 4s in small lineups, block a shot or two, get out on breaks, etc) and will find a role filling in gaps on a team to help them win.

Barnes to me has that UNC/Kansas SF/PF bust potential like a Julian/Brandon Wright.

His upside could also take him to a Rudy Gay type of level but nothing that I've seen or heard about his mental makeup to me makes him worth the risk over a surefire lively grinder like MKG.

If I'm gonna roll dice I'd rather do it with someone who has size or freakish athleticism.