These tables make it easier to do apples-to-apples comparisons of ProSales 100 members based on how they operate. Examined this way, Arkansas’ E.C. Barton & Co. is tops in its class even though it ranks just 16th overall and is 20 times smaller than ABC Supply and 16 times smaller than ProBuild. specialty dealers occupy five of the top seven places on the ProSales 100 while dealers with manufacturing capabilities have five of the top 10. Roofing companies are particularly big onthe list, holding five of the top 12 spots; No. 6 L&W focuses on drywall.