Bully to inferno. Bully had a more midlane read for us. In the one house 85% of the house is Columbia. We have had problems on the Bully with the factory finish 2000 glazing over after 6-9 games and giving weird reactions. Take the surface down to 1000-1500 then black Magic over the top and much better and consistent ball. Overall to me the cover is a bit stronger up front on the bully but you can tweak it to be close to Inferno. I still like the Inferno a little better but no major complaints on the Bully after surface adjustment. Can't go wrong with either ball.