The West Penn CN-BNC59MCV Universal RG59/U BNC Compression Connector gets rave reviews because it's so easy to install and fits a wide variety of coaxial cables that vary in size between manufacturers.
There's nothing worse than showing up at a job site to find out an off brand RG59 coaxial cable was specified. The differences in cable jacket thickness or insulation diameter, depending on variance in materials used in the cable manufacturing process, is enough to give you a headache. Keep a stash of West Penn CN-BNC59MCV Universal BNC Compression Connectors in your tool box and you'll always be covered.