I can see what you mean by the Ustashe sucking. I find nothing in their ideology that is of any redeaming value at all. However, I find the Chetniks to be of a more ambiguous lot. During WW2 there were many factions of Chetniks that stood for just causes and fought for the values of the Allies, and there were factions of Chetniks that were just as repulsive in both ideology and action as the Ustashe. My grandfather was an American soldier and eyewitnessed some of their scorched earth policies.
Now these people that called themselves "Chetniks" during the recent wars have pretty much tarnished the Chetnik name for eternity. Too many of these idiots in Krajina and Bosnia were as bad as the Ustashe.
Having that Nazi-like bastard, Sesejl, as their leader didn't help the Chetnik cause either. The good Chetniks of WW2 that are still around in America were disgusted to have his name associated with them. Draza Mihailovic must have been rolling over in his grave.