Kent patterns well out of my gun, so that's what I use. I usually shoot Winchester dryloc's for ducks as these pattern good as well.
I usually buy a couple different boxes and see what patterns well and go with that.
Though I'm not a fan of black cloud. From what I know, its unfinished steel shot, sold at a huge mark-up. That 'band' is present on all steel shot, but is removed by most manufacturers, before being put in a shell. The only real innovation black cloud has brought is the flight control wad, which keeps the pattern real tight.
I've never seen steel shot that didn't pattern tight, and don't see a reason to want it tighter, and only see draw backs if your hunting over decoys. Though if they would put that wad in large heavy shot, or buck shot I'd be the first customer.