Control can be had in two forms, layout or surface. Layout route, you would use large angles and a shorter pin to pap, lets say 2-3 1/4". Surface route, lower grit step up surfaces (500,1000,2000) and light coat of polish. A Nano Pearl in your hands would be decent with surface. The key is not to get caught up in balls but in filling a need. If you have a reaction that doesnt fit what you're looking for change it with surface before you plop down money on a new ball. If you try it and it doesnt work out then fill that need.