Municipal reporting is usually comprehensive except the amount of hardness is often not reported.
A titration type hardness test kit such as the Hach 5B is more accurate than test strip methods. If you're having equipment dealers attend your home, they should be testing your specific water themselves but if you're attending their facility, take a sample with you. Hardness can vary throughout the distribution system depending on your home's proximity to one well versus other wells. Best to test your specific water.
While you may think it better to purchase a big brand name, most softeners recommended on this site are assembled from generic off the shelf components utilizing either Fleck or Clack brand control valves and domestically manufactured tanks & resin. Generic systems are offered and supported by most local water treatment providers where parts and service are easily attainable. Brand names such as Culligan, Kinetico and others, may use proprietary equipment only offered through their dealer networks which is also often the only source for service and parts.