Depends on the load which depends on what you want to do with it.
For 16 yd trap and skeet, 3/4,7/8 or at most 1 ounce loads all work fine, it depends on how much money you want to spend to do the same thing. For those loads, Clays, Clay Dot, Red Dot, Promo, Titewad, Extra Lite is good.
For Sporting Clays a heavier load is probably desired and you will do with a medium speed powder such as Universal, Unique, Green Dot
For hunting, a full load is probably what you want so you would go with a slower powder.
Check out Alliant powder or Hodgdon's website for various loads.
Remember, use the specific weight, hull, powder, primer and wad listed because pressures can vary all over the place and changing any could result in either "poof" loads that leave a lot of soot, unburned powder and inconsistent velocities or a damaged gun.