For a while I thought the best line was the Geek Squad’s “To serve and install” but The Salvation Army’s “Doing the Most Good” is marginally better.

          They’re both great and certainly miles ahead of forgettable banalities such as … the window people … the label people … the whatever people or NAME OF STATE/CITY HERE’s leading/trusted/#1/hometown supplier of WHATEVER. 
          To serve and install and Doing the Most Good say a lot about their respective  organizations while conveying key benefits instead of mere features.